Susan threatens to tell the police all that the group has done.

"Did she ever threaten to tell your husband the truth if you didn't pay up?"

Max threatened her to tell the social services the truth, which she did.

She probably threatened to tell his wife about their affair, but whatever happened, he had to kill her.

"What was the sad story you threatened to tell me?"

He then threatened to tell my family about it if I didn't give him a picture of myself.

"When the guy didn't want to give it to her, she won by threatening to tell his wife."

"But you did threaten to tell me if he didn't get to it today."

She's still threatening to tell Derek and the rest of the family.

When they threaten to tell his wife, he comes clean.