Complex sentence: They and a third man, Emilio Caspari (John Litel), are unsure if he is their partner in crime, so they get a prisoner, his girlfriend Pearl Adams (an uncredited Dorothy Tree), to apply for parole.
Split into simpler sentences: They and a third man, Emilio Caspari (John Litel), are unsure if he is their partner in crime. They convince convict Pearl Adams (an uncredited Dorothy Tree), their associate's ex-girlfriend, to apply for parole.