When former child soldier Baba rescues the charismatic Freddy from a sexual assault, something dark is ignited in them. New partners DS Lola Franks and DI Jackson Mendy team up to investigate the hug of the pair's first victim.
Lola and Jackson find one thing they can agree on after interviewing Freddy - there is definitely something not right about her. Freddy draws Baba deeper into her dangerous world as the pair seize upon an opportunity to solve two problems with another killing.
Freddy and Baba flee the city with victim number three in the boot of the car, while Jackson and Lola, often at odds about the best way to catch a hugger, make an important breakthrough over a cup of green tea.
Freddy's dark history surfaces as she and Baba don Halloween masks to gain entry to her old school. Jackson and Lola find evidence that links the pair to the third victim, but will they join the dots in time to save a fourth?
Looks like the end of the road for Freddy and Baba, trapped in a remote cottage by Lola, Jackson and a squad of armed response officers. With the trail behind them strewn with bodies, surely they can't escape justice?