Doctor Thorne (2016)

S1E8 No Thanks, Masked Manx

The gang heads to Blake Manor for a getaway and arrives just in time for a costume party, where Mr. Blake plans to auction a priceless stamp. However, a notorious cat burglar known as the Masked Manx is on the prowl, leaving behind an ace of spades after each theft. With the stamp at stake, can the gang outsmart the thief and protect the valuable item?