Andy Samberg’s new frosted-tips hairdo is just one of the treats in store as series four of the reliably rib-tickling cop comedy begins with a double bill.

Jake (Samberg) and Holt (Andre Braugher) are in Witness Protection in Florida – but how long will it be before crime boss Jimmy ‘The Butcher’ Figgis tracks ‘Larry’ and ‘Greg’ down?

Watch out for brilliant cameos from Maya Rudolph and Rhea Perlman.