The novel “Slow Decay” by Andy Lane was published for the first time in 2007.

An investigation about an energy spike takes the Torchwood team at a nightclub where a brawl ended with the death of some boys. An alien device that has a strong influence on human emotions seems to have made the hostility between boys groups more intense. Gwen Cooper takes the device home to try to intensify the emotions existing between her and Rhys, lately a bit too weak but the results are not what she wanted.

While Captain Jack Harkness’ team tries to figure out who could kill a Weevil literally eating its face, Gwen and Rhys are trying to make their relationship work. Rhys discovers a new weight loss treatment and decids to try it hoping to be more attractive to Gwen after losing weight.