http://tdmb4s46emdioenhihvdhm22li4zl7wthf6ncu5tk5ydweiyhgwgulyd.onion?page=lastkillings
If the hitman fails to do the job for any reason, you get the funds back from escrow. If there is a dispute, the escrow admin can check whether the hitman did the task, and send funds accordingly either to the hitman if the task was completed or back to the customer if the task was not.