Visitors have been stepping back in time to the Victorian era where Cabinet Minister Sir Robert Fleet has been murdered. The local constabulary needs help from junior detectives to solve the crime.
Budding investigators have been picking up a crime file on arrival, examining the crime scene and gathering some evidence to start their quest, meeting costumed characters stationed around the Fort - Dr William Wallington, Cook Nancy Nelson, Officer Sidney Southwick, Patrick Purbrook and Constable Walter Widley.
Visitors have been listening to the suspects’ statements and use the evidence to crack the case.
The free event is taking place all half term until Friday, February 21 with free tickets online at www.royalarmouries.org to guarantee their visit.

1. Mystery at Fort Nelson
Anthony Brems and his son, Benjamin, 6, at the scene of the crime. Mystery at Fort Nelson where junior detectives attempt to solve a crime during half-term Picture: Chris Moorhouse (180225-52) | Chris Moorhouse Photo: Chris Moorhouse

2. Mystery at Fort Nelson
Hilary and Tom Mellor with their grandchildren, Demi, 5, and Tiah, 7. Mystery at Fort Nelson where junior detectives attempt to solve a crime during half-term Picture: Chris Moorhouse (180225-53) | Chris Moorhouse Photo: Chris Moorhouse

3. Mystery at Fort Nelson
The Williams, Watson and Hudson families. Mystery at Fort Nelson where junior detectives attempt to solve a crime during half-term Picture: Chris Moorhouse (180225-54) | Chris Moorhouse Photo: Chris Moorhouse

4. Mystery at Fort Nelson
Listening to Mr Patrick Purbrook. Mystery at Fort Nelson where junior detectives attempt to solve a crime during half-term. Picture: Chris Moorhouse (180225-55) | Chris Moorhouse Photo: Chris Moorhouse