Toni (1928)

Depressive Toni is diagnosed with idlesness by his doctor who recommends more excitement and danger. Another patient, a celebrated detective who bears a striking resemblance to Toni, is diagnosed with exhaustion and told to rest. The two swap places but Toni's first client turns out to be an exiled princess whose jewels are about to be stolen by a ruthless gang and the amateur detective finds more thrills than he bargained for.