After You with the Pistol - Bonfiglioli, Kyril

Art dealer and assassin Charlie Mortdecai has got himself married - it wasn't his choice exactly, a little pressure was exerted by certain secret government organizations who wanted to keep the lady in check, but it's not an entirely unenjoyable experience: she brings a lot of assets with her. Until, that is, he discovers she has some surprising interests and she wants to get him involved. Which is why he's trying hard to get himself imprisoned, safely away from the pursuing Chinese gangs...