i wanna ask something about s 4 if anyone can help! who robbed peter i mean who took his money and why is it kate ?

Meredith Walker had Brunski steal the $117 million in bearer bonds from the Hale vault, to use to pay assassins in the dead pool.

Kate was the one who opened the Hale gewelf, kluis up, but she actually didn't have to do with the stolen money of dead pool.