accomplice, partner in crime
Tom puede ser cómplice de homicidio.
Tom may be an accomplice to homicide.
Repito, identifiqué el auto del cómplice.
I repeat, I identified the accomplice's car.
— Taxi (1998)
La oscuridad es el cómplice favorito de un criminal.
Darkness is a criminal’s favorite accomplice.
Tom fue condenado a quince años de cárcel por ser cómplice de homicidio.
Tom was sentenced to fifteen years in prison for being an accomplice to murder.
Where is your accomplice?