complicity
n[U]
~ (in sth) action of taking part with another person (in a crime or some other wrongdoing); shared responsibility 合谋; 串通
He was suspected of complicity in her murder. 他涉嫌合谋将她杀害.
Fortunately for them, the Bank of England has a team called Mutilated Ladies which deals with claims from people who fed their money to a machine or to their dog.