Ep 7. Brotherhood

In Arrow season 4 episode 7 titled "Brotherhood," Oliver Queen, also known as the Green Arrow, deals with the fallout from the past few episodes. For starters, he's still very troubled with the fact that he killed his adversary Damien Darhk's wife without meaning to. This guilt weighs heavily on him and affects his ability to focus on his work as the Green Arrow, leading him to confront his former mentor, Talia al Ghul.

Meanwhile, Thea Queen, Oliver's sister, is going through her own struggles. She's dealing with the revelation that her father, Malcolm Merlyn, has known about the depth of her bloodlust all along. This realization causes friction between Thea and Malcolm, leading Thea to make some difficult choices regarding her relationship with him.

Elsewhere, Diggle is dealing with his own demons. He's still reeling from his brother's betrayal and incarceration and has grown distant from his wife, Lyla. This is further complicated when Diggle is approached by his brother's former boss and offered a chance to bring him down for good.

The episode is also notable for introducing a new villain – the leader of the Ghosts, a group of mercenaries currently working alongside Damien Darhk. This new villain could pose a major threat to Oliver and his team moving forward, and his introduction sets up some intriguing possibilities for future episodes.

Overall, "Brotherhood" is a gripping episode that explores the personal demons of several key characters while also setting up some major plot points for the rest of the season. Fans of the show will likely find themselves on the edge of their seats as they watch the events of this episode unfold.