A young woman insists on orchestrating the love lives of her acquaintances, although her own could use some attention.

When a hydrogen bomb scientist is found strangled with newspaper in his mouth and lipstick on his neck, Jericho and his team debate whether the murder was a political assassination or a crime of passion. Meanwhile, Jericho's relationship with Juliette draws ire from the assistant commissioner.

When Rachel Harrington's bones are found in Zambia, her expat father and local mining engineer, Stephen, asks the team to come out to investigate. Rachel had been accusing the government of a health cover-up, and an initial examination shows evidence of multiple stab wounds. But as the team investigates further, it seems the government weren't the only ones to have been rubbed up the wrong way by Rachel.

The team are called in to investigate an armed raid on a suspected terrorist cell. Two terrorists have been killed, together with a police officer. But when Nikki's findings point to a bungled raid with innocent lives being lost, people start to pass the buck.

When the badly decomposed body of a Hasidic man is discovered on disused wasteland, Harry is tasked to investigate his death, and to treat the community with care. Everything points towards a brutal anti-Semitic murder by a Polish laborer - but when the time of death contradicts his wife's last sighting, Harry becomes suspicious. Leo, meanwhile, is trying to unravel the events leading to the death of an Australian backpacker at a party.

Nikki visits the only key eyewitness, Isra, the teenage sister of one of the suspects who insists her brother is innocent. Nikki is appalled by the harshness of her treatment, and the team begin to seriously suspect that the truth is being covered up. Meanwhile, Rhys is on the run, and Harry is shocked when he discovers the identity of the unknown victim.

With his protégé dead and the team themselves in danger, Harry is reeled into the murky world of Russian oligarch Oleg Kovik. Kovik claims Fran Price's murder was ordered by the Russian Government and Leonid Polyak, and that he's the next target. Distrustful of the police and of Kovik's intentions, Harry becomes determined to find the missing clues that will reveal the truth.

When Leo is stopped for drunk driving, he is sentenced to community service in a rough South London estate, where a community worker AJ is not impressed at being saddled with a 'drunk whitey'. Nikki, meanwhile, is investigating the death of a young girl at a nearby fairground. A disturbing picture of gang violence emerges, with the kids Leo is working with right at the heart of it.

The team are called to look at the death of Ray Quinn, who was killed in what looks like a robbery at a Classic Car garage. The owners, Mick and Martin Flannery, are keen to clear the scene so that they can open for business again, but after an initial investigation, Eve is convinced that there is more to the case than a robbery gone wrong.

The Body Farm team are called in to investigate the death of prominent human rights lawyer Richard Warner. He died in a fire at his home but it is not clear if the fire was set deliberately, so the team analyse the severely burned body without knowing the cause of the fire.