Layer Cake (2004)

This is an okay British movie. A former mechanic (Daniel Craig) has been working for the mob as a go between, purchasing illegal drugs from black market wholesalers and then turning them over to street dealers for a profit. Now he wants to retire, but first he is given two final assignments by crime boss Jimmy Price (Kenneth Cranham). He must locate the drug addicted daughter of a powerful criminal (Michael Gambon) and then negotiate a large sale of ecstasy to a petty crook known as The Duke.

It is based on the 2000 novel by J.J. Connolly. The title refers to the social layers of the British crime underworld and to the multiple plots in the film.