E. Phillips Oppenheim 
The Cinema Murder [EPUB ebook] 

Philip Romilly is a young art student, half-starved, both mentally and physically and without prospect.
His cousin, Douglas, has everything and even buys Beatrice, Philip’s fiancée.
The two cousins meet under an English railroad bridge… and Philip emerges alone. A day or two later he sails for America, under the name Douglas Romilly and wearing his cousin’s clothes. Philip’s career in New York is filled with incident.
On his wedding day, he is arrested for the murder of his cousin, and he seems lost, but the unexpected happens to save the situation!