Murder mystery party costumes follow the kit's setting and your character sheet; Night of Mystery and University Games print a costume note for every role. Wear drop-waist dresses, suspenders and pearls for the 1920s, gowns and sharp suits for old Hollywood, denim and boots for a Western, built from clothes you own plus one accessory.
Costume note — The short wardrobe guidance printed in many party kits' character descriptions, such as the costume and acting tips in Night of Mystery's character packets, telling each guest what their suspect would wear.
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What you wear to a murder mystery party depends on two documents: the kit’s setting and your character sheet. Most kits tell you both. Night of Mystery’s character packets include costume and acting tips for every role, and University Games’ Murder Mystery Party invitations list costume options for each suspect. Your job is to turn that note into an outfit, usually from clothes you already own. If you are the host, see how to host a murder mystery party for the full plan.
Start from the character, not the era
A costume works when other guests can guess who you are from across the room. Night of Mystery’s costume guide puts it as a formula: one anchor item (a hat, jacket, dress or uniform-style shirt), then one prop, one defining accessory and one character habit, such as an accent or a posture. Its advice for period settings is to focus on accessories (hats, gloves, suspenders, pearls) rather than hunting for era-perfect clothing.
Here is what those notes look like in published kits:
| Kit | Where the costume note sits | Example from the publisher |
|---|---|---|
| University Games, Murder on Misty Island (8 players) | Costume suggestions for each suspect in the party instructions, repeated on the invitations | Charter boat skipper: wide striped shirt, white rolled-up pants, fishing hat, deck shoes. TV actress: big jewelry, a boa, sunglasses, high heels |
| Night of Mystery, Murder Among the Mateys (pirate setting) | An “Acting and Dressing Your Part” paragraph at the end of each character description | A pirate’s widow wears black: a flowing black skirt with a ruffled white blouse, or a dark tattered coat over breeches, with silver trinkets |
| Night of Mystery, Cruising for Murder and other titles | Costume and acting tips inside every character packet, plus themed costume pages on the publisher’s site | Roles such as a ship’s captain, a purser and a showgirl, each with its own wardrobe hint |
None of these needs a costume shop. Read your own note first, then use the setting table below to fill gaps. Our guide to murder mystery characters explains how those roles are written and assigned.
Dress code by setting
| Setting | Core pieces | Easy accessories |
|---|---|---|
| 1920s jazz age | Drop-waist or fringe dress; suspenders, vest and bow tie | Long pearls, feather headband, gloves, flat cap or fedora, pocket watch |
| Victorian manor | Long skirt and high-necked blouse; waistcoat and dark jacket | Shawl, cameo brooch, gloves, pocket watch, walking cane |
| 1950s Hollywood | Evening gown or full-skirted dress; sharp suit with a slim tie | Sunglasses indoors, faux fur stole, autograph book, vintage-style camera |
| Cruise ship | Navy and white stripes, white trousers, blazer; evening wear for the captain’s dinner | Captain’s hat, scarf, sun hat, binoculars |
| Western town | Denim, plaid shirt, boots, vest, prairie skirt | Cowboy hat, bandana, sheriff’s badge, notebook for a traveling salesman |
| 1960s casino | Sheath dress or slim suit, skinny tie | Cat-eye glasses, headband, statement earrings, a deck of cards in a pocket |
1920s jazz age. The easiest theme for guests, and Night of Mystery lists flapper dresses, feather headbands, suspenders, fedoras and polished shoes as the base. A grand mansion party calls for more glamour: long gloves, sequins and a tuxedo jacket.
Victorian manor. Think country house at dusk. Dark colors, layers and buttoned-up silhouettes do most of the work. A butler needs only a black jacket, a white shirt and white gloves; a lady of the house adds a shawl and a brooch.
1950s Hollywood. Night of Mystery’s Hollywood suggestions include a faded movie star, a studio executive in a sharp suit and a gossip columnist with a notebook and camera. Indoor sunglasses are the cheapest prop in the room.
Cruise ship. Stripes, white and navy read as nautical instantly. Crew roles can wear a white shirt with gold-colored tape on the shoulders; passengers can dress for a formal dinner on deck.
Western town. Night of Mystery suggests a sheriff or deputy, a ranch owner and a traveling salesman, with denim, boots, hats, badges and notebooks to sell the look.
1960s casino. Clean lines, bold eyeliner and slim tailoring. A dealer needs a white shirt, a vest and an armband; a high roller wears the best suit in the house.
Costumes from your own closet
Night of Mystery’s costume ideas page answers the most common question directly: yes, you can build a costume without buying new clothes, by combining everyday clothing with hats, scarves, jewelry or masks. Some closet-first combinations from its guide:
- A black dress with pearls for a socialite.
- A button-down, a tie and a clipboard for an executive.
- A floral shirt and sunglasses for a vacationer.
- A denim jacket and a notebook for an investigator.
Comfort matters, too. Guests stand, mingle and move between rooms for two or three hours, so practical shoes beat authentic ones.
Simple accessories and a costume box
Keep a small box by the door for guests who arrive in plain clothes: hats, scarves, gloves, costume jewelry, reading glasses, a few notebooks and pens, and name tags. A detective needs only a magnifying glass and a notebook; a reporter needs a press card clipped to a jacket. Skip any prop that looks like a weapon, even a toy. Clues, documents and conversation carry the story, and a prop that mimics a weapon only distracts.
Set the scene on a small budget
Costumes land better in a room that matches them. Night of Mystery’s decor guide suggests string lights, lanterns, candles or battery-operated lights, with soft lighting for suspense, and themed place cards and table signs to carry the story. Practical ideas that cost little:
- Lighting: warm lamps, battery candles and string lights. Dim the room, but keep it bright enough to read clues.
- Music: a playlist that matches the era, such as jazz for the 1920s, big band for Hollywood, lounge music for a casino, or country for a Western. Night of Mystery kits include themed playlists.
- Place cards and name tags: write each character’s name and title, not the guest’s. It helps everyone remember who is who.
- Suspect board: print the cast list with a photo of each guest in costume, taken as they arrive.
Announce awards in advance: Night of Mystery kits include certificates for categories such as Best Costume, which gives guests a reason to make the effort.
Put the dress code on the invitation
Night of Mystery recommends sending invitations three to four weeks ahead when costumes are involved, with each guest’s character name, backstory and costume ideas, then a reminder a week before. Write the dress code in one line (“1950s Hollywood premiere: dress for the red carpet”) and add two or three examples. For a murder mystery birthday party, let the guest of honor choose the setting.
Still choosing a kit? Our guide on how to choose a murder mystery party kit covers settings and cast sizes, the best murder mystery party games compares them, and the murder mystery party hub gathers every guide.
Key facts
- Every Night of Mystery character packet includes a detailed character description, costume and acting tips, and secret objectives for each stage of the party.Night of Mystery, Cruising for Murder introduction file, 2026
- Night of Mystery's costume guide advises guests to focus on accessories such as hats, gloves, suspenders and pearls rather than era-perfect clothing, and to build a look around one anchor item plus one prop, one accessory and one character habit.Night of Mystery, Murder Mystery Party Costumes: The Ultimate Guide, 2025
- University Games' Murder on Misty Island invitations list costume options for each of its 8 suspects, such as a striped shirt, white rolled-up pants, fishing hat and deck shoes for the charter boat skipper.University Games, Murder on Misty Island party instructions, 2021
- Night of Mystery recommends sending invitations 3 to 4 weeks ahead when costumes are involved, with each guest's character name, backstory and costume ideas.Night of Mystery, murder mystery party host checklist, 2025
- For decor, Night of Mystery suggests string lights, lanterns, candles or battery-operated lights, plus themed place cards to carry the story across the table.Night of Mystery, How to decorate for a murder mystery party, 2026
FAQ
Do you have to wear a costume to a murder mystery party?
No, but the host sets the level. Night of Mystery calls costumes optional for corporate events and encouraged at home parties. One themed accessory, such as a hat, scarf or badge, is enough to show you are playing along.
What should I wear to a murder mystery party if I don't have a costume?
Read your character description, then pick the closest thing in your closet: a dark suit or black dress for a wealthy guest, a button-down and notebook for a reporter, denim and boots for a ranch owner. Add one accessory that says who you are.
What do you wear to a 1920s murder mystery party?
Drop-waist or fringe dresses, long pearls, feather headbands and gloves, or suspenders, a vest, a bow tie and a flat cap or fedora. Night of Mystery's costume guide advises focusing on these accessories rather than hunting for era-perfect clothing.
How far in advance should guests know the dress code?
Three to four weeks if you expect real costumes, which is what Night of Mystery recommends for invitations. Send the dress code with each guest's character, then remind everyone a week before the party.
Sources
- Night of Mystery: Murder Mystery Party Costumes, The Ultimate Guide
- Night of Mystery: Murder mystery costume ideas
- Night of Mystery: Cruising for Murder introduction file (PDF)
- Night of Mystery: murder mystery party host checklist
- Night of Mystery: How to decorate for a murder mystery party
- University Games: Murder on Misty Island party instructions (PDF)