Mystery of the Dangerous Secrets kids mystery party

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Mancy Crew Volume 1 - detective-themed non-murder mystery party for all girls - ages 12+ for 7-12 guests! Get ready to do some serious sleuthing and have a blast solving a fun and challenging mystery at River Peak High School!  There is an 8 female player expansion pack available.  This is the instant download upon purchase. Download everything you'll need to play immediately upon purchase - no waiting, no shipping fees.  For the boxed version, click below under 'helpful links,' to have our staff prepare your kit.

Three stars for difficulty.

Note: this game was updated on 1/31/18. If you have purchased the game license within the last year, you can download the newest version from your account.

Helpful Links:
Click here to view the character list!
Click here for the free, printable invitation!
Click here to view the 8 character expansion pack (all female) - Click here!
Click here to view sample game materials.
Click here to have My Mystery Party staff prepare your game kit!
Direct your guests to the corresponding invitation site at 'Your Mystery Party'


Mystery Party Game Synopsis

Mancy Crew is a senior at River Peak High School.  With a natural talent for investigation, she founded the River Peak High Forensic Science Club, which has even assisted the police department on occasion!

Mancy recently received word from an anonymous tip about a secret society called the Sisterhood of the Dangerous Secrets. This organization was founded in the 1920s at River Peak High, and membership has passed down generations ever since.  This year, the Sisterhood has threatened to strike again! Mancy has called an emergency meeting of her team to discuss the mystery of the Dangerous Secrets. Supposedly, one of the club members is the target of a hidden secret!

Mancy has asked the forensic club to assemble in the teacher’s lounge of River Peak High.  She will give the group details about the anonymous tip, but she also has a few stress-relieving games planned to break up the meeting.  As Mancy says - relaxed sleuths are effective investigators!  Rumor has it there are codes to break and riddles to solve before the hidden secret can be found somewhere in the school.  Also, the anonymous tipper has hinted that someone in the forensic club may be a member of the Sisterhood of the Dangerous Secrets!  The group will need to rally together to find the secret and find the member of the Sisterhood! 


In addition to the fun mystery game, there are optional bonus games! Free add-ons from The Official Party Host Handbook!


Minimum age:
12 years
# of players:
7-12 players
Expansion pack:
8 players
Gender of players:
All female


  • 5
    Great Party Idea!

    Posted by Shannon Albright on Nov 16th 2020

    My daughter's group of pre-teens had such a great time with this party! It was the talk of 5th grade for weeks :). The kit is complete and easy to follow, with tons of room to make this a one-of-a-kind party.

  • 5
    Great pre-teen birthday party!

    Posted by H on Sep 30th 2016

    My group of a dozen 11-12 year old girls had the time of the their lives with this! Thank you so much for making it a great birthday party.