 Oliver Lane is "The Solitaire Man," a renowned jewel thief who is ready to retire and marry Helen, his partner in crime and his one true love. Their plans are shattered when another member of their gang, Bascom, walks in with a stolen necklace. Helen will not marry Oliver until the necklace is returned. Oliver s attempt to return the jewels later place the whole gang under suspicion for the theft and for the murder of a Scotland Yard inspector.