I am on this Mission right now and
And I cannot find the reason for this, I want to tell him the news but he just starts attacking me once I enter the room and press A to talk.

The only thing I can see that might have gone wrong is that when I went downstairs to get the prison open the prison guard attacked me so I fought back and killed him; leading fourth that the leader would wanna kill me. But what other choice did I have?
Anyone encounter this or have anyway around it cause I really dont wanna kill him, but if I dont find the solution then Im just ganna kill him.
Thanks all

if u kill any of davison's nightkin in the basemant he will become hostile. if this happens ur only option left is to clear them all out. or revert to a previous save, and use a stealth boy to find the ghouls dead friend and get him to leave the room the nightkin are trying to get to, or kill the ghoul.

Just to tell you I was using the stealth boy lol but the guard still attacked me, its probably because he heard my footsteps. but damn I have no previous saves so I guess Ima have to kill them.

No, you just have to leave one alive...that doesn't include the Jailer. Usually you can avoid the ones in the back rooms and thus it'll work.

Another option is not to bother looking for the ghoul's friend. Just kill him (no karma loss -- no nothing). He'll go hostile when you head up the stairs to check the computer terminal, so just fight back and be done with it.

Crimson: yeah thats what I ended up doing I had no other choice, cause I couldnt pickpoket the nightkin for some reason but o well

thanks for the help guys

This is correct answer.