Layer Cake (2004)

A successful cocaine dealer with a reputable place in the British Mafia is planning to retire a little early from work. But the big boss Jimmy Price assigns him to two ambitious missions. First, he must find the missing rich princess Charlotte Ryder. The girl is the disappearing drug addict girl of Eddie Temple, the mob boss everyone's afraid of. His other job is to negotiate a giant drug delivery business with Duke, an insecure gangster. These things will not be like pulling hair from butter at all.