Sherlock Holmes and the Missing Thornycroft Blueprint

A top secret submarine design has been stolen from Thornycroft Engineering Works, and the consequences could be catastrophic. 

In the late 19th century, new naval technology and industrial innovation were closely guarded secrets. The loss of a single set of plans could shift the balance of power between nations. 

J Timms, the draughts clerk, locked the plans away late last night, but this morning they have vanished. 

Fearing espionage, Mycroft Holmes has turned to his brother Sherlock Holmes...

Now they need your help! 
 

Become a detective!

Pick up your investigation notebook and explore the museum as you: 

• Solve clues and crack codes  

• Track suspects and follow leads  

• Meet witnesses and undercover agents 

• Search for hidden evidence  

• Use powers of observation and deduction  

• Visit 8 locations as you gather the evidence. 

Along the way, uncover the world of Victorian espionage, early submarine development and the growing race between nations to protect their naval advantage. 
 

Not everyone you meet can be trusted. 

Crack the case!

Follow the clues, examine the evidence and report back to Mycroft. Can you: 

• Identify the culprit?  

• Uncover the spy ring?  

• Recover the missing blueprint?  

• Complete your investigation and claim your reward.

  
   

Are you ready to take on the challenge? 

Book your tickets now - below - and begin your investigation. 

Pick up your detective pack on arrival. 

Plan your visit: 

• Running this May half term  

• Included with museum admission  

• Designed for families and children of all ages  

• Includes a small themed display exploring Victorian spies, naval innovation and the world of Sherlock Holmes