Motive: Disillusionment
Martin visited Sylvester’s pawn shop while in Warsaw on business. Sylvester had heard of Martin’s journalistic campaign against technological advancements and thought he might be able to help speak out against the Nazis and their persecution of gypsies in Germany. When Martin refused to help, Sylvester killed him in frustration.
Concealed Evidence: Glass Shards
Sylvester approached Martin in an alley and asked to read his palm. He then held Martin’s wrist with his left hand while he pulled a crystal ball from his pocket with his right hand and used it to bash Martin’s head. The blow killed Martin instantly. Sylvester shattered the crystal ball on the ground and broke a window nearby so that the shards of the crystal ball would be mixed in with shards from the broken window.
Alibi: At Usual Post
Sylvester killed Martin outside of the pawn shop, but he left the pawn shop without locking up. He’s known to be paranoid about thieves, so people believe he was inside the pawn shop at the time of the murder.
Frame Up: Hoodlums
Some troublesome kids had recently been breaking windows in the neighborhood where Sylvester keeps his shop. He reported seeing them running from the alley after he had heard glass breaking and a loud thud. The police assumed these kids had broken the window, gotten in a fight with Martin and killed him with a rock.