Terror by night

de Roy William Neill, Frank Gruber

When the fabled Star of Rhodesia diamond is stolen on a London to Edinburgh train and the son of its owner murdered, olmes must discover wtic of his suspicious fellow passenges is responsible. Aided by Dr. Watson and Inspector Lestrade, he discovers the murderer's hiding place is somehow involved in the crime. This is the thirteeth film of the Rathbone/Bruce series.