Wisniewski soon starred in a string of German films, after which he reappeared to UK audiences in an episode of the TV series "Lock, Stock...The Series" based on the gangster film by Guy Ritchie, where he played mullet-wearing Heinrich who accidentally commits suicide by shooting himself in the head playing a film game. Two years later he was in an episode of the ITV hit series "Ultimate Force" alongside popular soap opera star Ross Kemp playing Serbian terrorist Savo Glasnovic. Wisniewski hit the screens (although his face is never seen) in the UK again in 2008 after a six-year break when he co-starred in Mark Tonderai's cat-and-mouse thriller "Hush".