Knave of Diamonds, Ace of Hearts

Leonard finds himself facing a murder charge after pulling a job Alexander turned down. The elderly Blacke accepted to test a new security system at a jeweler’s and ended up accused of murder when a corpse turns up inside a vault. This predictable episode involves a planned jewel heist, father-son rivalry and bungling police work. Alex is coerced into solving the mystery of what happened to Czar Nicholas' diamonds and who killed the jeweler.