Birthday theme

A murder mystery party

Character cards, a clue with every course, and a culprit by dessert.

Murder mystery invitations

Free designs with an RSVP link that tracks every reply. Tap one to start yours; your names, date and place fill in, and you can change the design any time.

Ideas for your murder mystery party

Pick one or two from each and keep the rest simple.

Decor

  • Tall candles in brass holders down the table, with a character card at every seat
  • A manor entrance: a welcome sign, a guest book and a rack for costume pieces
  • A case board with a floor plan, red string and a photo for each suspect
  • Low lamps and a jazz playlist from the 1920s

Food

  • A cheese board to start, while guests read their character cards
  • A three-course dinner served in stages, with a clue envelope between courses
  • A signature cocktail for adult guests and a cranberry-ginger mocktail for everyone else
  • A dessert that waits until the culprit is named, like chocolate pots

Cake

A dark chocolate cake with a red ganache drip and a fondant magnifying glass on top.

Favors

Optional. Something small and edible travels best.

Colors

DeepBrightPopSoft

Pick one bright color for balloons and napkins, and keep plates plain.

Activities for your murder mystery party

How to play and what you need. Pick them in your plan and the supplies go on your shopping list.

Murder mystery dinner

Grown-ups · 90 min

Mail each guest a character card a week ahead with a costume idea and one secret. Over dinner, read a clue between courses; guests question each other, and before dessert everyone writes down who did it. The host reveals the culprit with the cake.

You’ll need: A printed murder mystery party kit, or character cards you write, Clue envelopes, one per course, Pens and guess cards

Alibi interviews

Grown-ups · 25 min

Each guest has an alibi on their character card. Between courses, guests pair up for three-minute interviews, then swap partners. Everyone takes notes on who was where and whose story has a hole in it.

You’ll need: Character cards with alibis, Small notebooks, Pens, A timer

Suspect lineup

Grown-ups · 15 min

Draw a height chart on a paper backdrop, like a police lineup. Each guest steps up in character with a name card for a photo, and the host reads a one-line description. Post the photos on the case board before the final vote.

You’ll need: Paper and a marker for the height chart, Name cards, A phone or camera

Best in character award

Grown-ups

All night, guests try to stay in character. Before dessert, everyone votes on a card for the guest who played their part best, and the host announces the winner right after the culprit is revealed.

You’ll need: Vote cards, Pens, A small trophy or a magnifying glass for the winner

Shop the murder mystery look

Plates, decor, favors and a cake idea in the theme's colors. The Shop counts each one for your guest list.

Open the murder mystery shop

What to do and when

The plan for a birthday party, counted back from the party day. Festidy puts real dates on it. See the full birthday party plan.

  1. 6 to 8 weeks out

    • Pick a date, a start time, and a backup date
    • Set a budget and choose your big two
    • Write the guest list
    • Choose a theme or a look
    • Lock in the location and a rain plan
    • Note food, accessibility, and comfort needs
  2. 4 to 6 weeks out

    • Decide on music and one main activity
    • Book rentals if you need them
    • Decide: cater, order trays, or cook
    • Collect photos and messages from friends
    • Book a photographer or pick a friend to shoot
    • Send the invitations
    • Order the cake or dessertsCake idea: A dark chocolate cake with a red ganache drip and a fondant magnifying glass on top.
    • Ask helpers and give them roles
    • Make one contact and confirmation list
  3. 2 to 3 weeks out

    • Order decor, tableware, and favorsDecor idea: Tall candles in brass holders down the table, with a character card at every seat
    • Plan the menu and check allergiesMenu idea: A cheese board to start, while guests read their character cards
    • Plan the one or two moments that matterActivity idea: Character cards sent a week ahead, with costume ideas
    • Follow up on RSVPs
    • Plan drinks, including good non-alcoholic options
    • Build your one-stop shopping list
  4. The week before

    • Confirm every vendor
    • Lock the headcount and shop for food and drinks
    • Prep favors, decor, and a playlist
    • Write the party-day schedule
    • Send the final party note
  5. The day before

    • Pick up the cake and set up what you can
    • Pack a party-day kit
    • Charge devices and share the run sheet
    • Make the final weather and space call
  6. Party day

    • Set up an hour before
    • Run the party and finish on time
    • Reset the space and check for left-behind items
  7. After the party

    • Share photos and settle any remaining balances
    • Send thank-yous
    • Save photos and notes for next year
    • Leave a quick note for your future self

Party-day run of show

For a 3-hour party starting at 2 pm.

  • Final setup and safety checkSetup crew gets food, activities, and the entrance ready.
  • Arrivals and drinksGreeter welcomes guests and handles coats.
  • FoodFood lead opens the food and keeps it stocked.
  • Toasts and slideshowCo-host introduces two or three short toasts.
  • CakePhotographer gets the candle moment and a group photo.
  • Music and dancingEntertainment lead turns up the playlist.
  • Quick resetCollect gifts and check the space for left-behind items.

Free murder mystery printables

Print at home on letter paper or card stock.

More birthdays themes