Oliver and Lyla walked towards the cells. John had to work with Floyd Lawton, the man who killed his brother. The fact that Andy was apparently alive did not negate Floyd's actions. Now, Oliver had to do something similar. Malcolm had murdered John, Oliver's best friend, he would pay. Nyssa ha agreed to help, she still wanted vengeance against Malcolm. A part of Lyla wanted vengeance also, but she had a greater responsibility to protect and raise little Sarah. But Lyla offerred Oliver use of the suicide squad. Two of the three members were Ben Turner and Carrie Cutler, both of who had tried to kill Oliver in the past. But the third man, the one Oliver had the most reason to hate, the man who murdered Oliver's mother in front of him and his sister. Oliver hated the idea of working alongside Slade Wilson again. But to avenge John Diggle's death, he would do it. Oliver saw Slade in his cell.
.
Oliver: I hear you're doing better with this team.
Slade: They give me a reason to live. I'd die to protect Ben and Carrie, they'd do the same for me.
Oliver: I know the feeling. I lost my best friend, I want you and them to help me kill the man responsible.
Slade: And how do I know you wouldn't use the opportunity to also kill the man who killed your mother.
Oliver: The same way I know you won't use the chance to kill me.
Slade: In other words, we cant trust each other.
Oliver: Do you want to help or not?
Slade: I will, on one condition. Just you and me. You can bring your own allies if you want, Ben and Carrie sit this one out.
Oliver: You want to keep them out of the line of fire, when you try to kill me.
Slade: Maybe. Maybe I think you're going to kill me. If that happens, even if you succeed, they'll try to avenge me. I'll take the risk myself.
Oliver: Deal.