Two fellas found an empty car parked on the side of the bridge. They didn't manage to start it, when two coppers came across them, realizing this was an attempted car thief. Was the car owner jumping out the bridge? Brooks and Casey dug in the victim personal life: she was a former junkie (risking her life over an overdose in the past), her former husband is an alcoholic who used to beat her up and she's now engaged to a man very close to her only daughter (Charlotte Hope). But something strange emerges from the accident when the body came up: the suicide was probably staged because the corpse couldn't go upstream. During the investigation the stepfather turn out to be a real piece of work: you have to watch the episode to see his grieving victims crying endlessly.
This episode displays that sometimes what you left behind is better than what you have. Women have to think twice before made any decision. Anyway I feel pity for the poor teenage girls, they trust anything a liar would say to them.