As is usually the case, there's a lot on DI Jack Frost's plate these days. He's been assigned a new officer, DS Terence Reid who has been transferred somewhat abruptly after investigating a university student for selling contraband cigarettes. He has other problems as well, as Frost soon learns, but generally he is a good copper. Their first case is that of a woman, eventually identified as Sylvia Carter, whose remains are found on the railroad tracks after being run over by several trains. She worked for a local sandwich maker and Frost is convinced she was having an affair with someone. Dr. Helena Gibson, a senior surgeon at the local hospital in Denton, goes missing over a weekend. From all accounts she was in on Saturday but didn't show up at a colleague's house for lunch on Sunday. She was brilliant in her field but was disliked by virtually everyone at the hospital so there is no shortage of possible suspects if in fact anything is amiss. Lastly, Jack has a lookalike who is impersonating him and then touching and groping women. He is not amused, nor is Supt. Mullett who is worried about appearances.
—garykmcd