The gruelling investigation of the attacks on the Mt. Thomas police continues, as Tom heads to Melbourne to investigate the man who sold the parts for the bomb. He links it to chemical dealer 'Doc' Parkinson, and is determined to prove that he provided the Baxters with supplies for both the bomb and the speed.Although Nick seems to be against this idea, he does join PJ and Amy - who everyone at the station is very impressed with - on another search of the Baxter property, during which time he plants listening devices in their home - which ultimately lead them to discover the truth.On a doorknock, Jonesy and Susie rescue an attractive woman named Donna from a rubbish skip she has been locked in, and Jonesy falls for her. That night at the pub, her former de facto lover hits him, and then claims that Donna took all his possessions, and is a con artist.Ben has been fawning over Susie a little too much, buying her expensive gifts, and she ultimately gives them back and leaves him unsure