A man behaving erratically while carrying a hockey stick has been arrested and brought into Luton police station after he was reported to be staring through the window of a house, while a young woman has been detained for headbutting a nightclub bouncer. Upstairs in CID, DC Cathie Layton is investigating the case of a man who is alleged to have assaulted a taxi driver and stolen his keys, but when she meets the suspect her instinct tells her all is not what it seems.