Hunt the Toff

(from the back cover)
While on holiday, the Toff befriends a lovely girl who calls herself Marion Lane -- but who is not all she appears. Why, for instance, is a man called Harry Marvel -- whom she seems to know -- following her and why does she want nothing to do with him?
Then Marvel is found murdered and all the evidence points to Marion. But she was with the Toff at the time of the murder and the police believe that he is her accomplice...
Faced with a charge for a murder he didn't commit, the Toff goes into hiding -- and the hunt for the Toff is on!