Mr. Zero

When Gay Hardwicke''s cousin Sylvia begs for her help, Gay finds herself drawn into a tangled web of blackmail and mystery. Sylvia''s husband, the wealthy Sir Francis Colesborough, forbids her from playing cards -- but Sylvia has lost a fortune and is being blackmailed by the enigmatic "Mr. Zero."

As Gay tries to unravel the mystery and protect her cousin, a sudden murder throws everyone under susp...