He was the boss, after all. Sitting in that position, he had plenty of enemies. Many people wanted to take his life.
So every time he left, he did so in secret.
Other than the person who took him there, no one else would know about that particular safe house.
He also knew that Boss Saint definitely had more than one safe house. However, he was certain that for each one, only the person who escorted Boss Saint there would know its location. No one else. That's why he was so sure.
After hearing this, Stella Sterling nodded, not doubting what he said.
She knew he wasn't lying. The moment she'd stepped off the plane, she had carefully observed her surroundings.
There was no one else around besides the two of them. That was why she had been able to act so brazenly, knocking Zane Xavier unconscious and pulling the plane directly into her personal space.
