Hidden safely away in a farmhouse in the middle of nowhere, Darren wrestles with the chaos he has unleashed. But when a mysterious group of mercenaries set their sights upon him, will Kinney be able to get there in time to prevent bloodshed?

Elliot's loyalty is tested by an increasingly suspicious Ed Dumani. Sean throws a dinner in an attempt to unite the two families. Alexander is asked to meet with some of Finn’s old contacts.

Old scores are settled. New alliances are forged. Lives are lost. Elliot is forced to make a choice that will define his entire future. And Sean makes a discovery about a traitor who has been in his midst all along.

With the stakes higher than ever, the Wallaces are forced to go into hiding. Luan risks his life to rid himself of Mosi. Floriana seizes an opportunity. Elliot attempts to save the life of a colleague.

As the series races to a climax, who will emerge as winner in the battle for control of London?

As alliances are redrawn, Lale comes face to face with nemesis Asif and enters into a dangerous game of cat and mouse.

The extent of the conspiracy is revealed. Elliot's past and present collide and the Gangs take revenge, changing London forever.

Finn Wallace, London's most powerful criminal, is dead - and nobody knows who ordered the hit.

Elliot's investigation puts him on a direct collision course with the Mayor. Marian decides whether to reunite with her family.

Marian Wallace is forced out of hiding and made to confront his past as Koba launches a terrifying helicopter attack on his enemies

As Lale faces a difficult choice, Asif is made an enticing offer and Marian discovers something that could impact her family.

When Elliot's drug shipment is spiked, rocking the Gangs and causing hundreds of deaths, the hunt is on for who is responsible.

Sean, Billy and Cornelius make a drastic attempt to reclaim London, while Luan tries to take revenge and Elliot seeks answers.

A showdown between Elliot and Zeek leads to a shocking discovery. Has Elliot been looking for answers in the wrong places?

Luan takes drastic action to defend his family. Elliot uncovers a piece of the spiking mystery. But will it cost him everything?

With the Wallaces retreating to a safehouse, Marian puts the pressure on Sean to uncover Finn’s killer – and Sean wrestles with who he has become. How far is he prepared to go in pursuit of the truth? Meanwhile, Elliot’s recuperation is interrupted by a new danger.