Former West Yorkshire detective Nick McFadden has been found guilty of stealing drugs from a police lockup and selling them on the streets of Leeds.
He and his brother Simon made at least £600,000 from the sale of class A drugs - money used to fund a lavish lifestyle.
Nick McFadden was found guilty of three charges of theft and three charges of conspiring to supply class A drugs, but cleared of supplying amphetamines.
He'd also earlier admitted money laundering. His brother Simon was found guilty of five charges of conspiring to supply class A, B & C drugs.They'll be sentenced on Thursday.