OK who fancies a little wager???
I’ll wager that he provides the Police with a ‘location’ for the body ….. a massive search ensues (with the Media in full attendance naturally) …. and surprise surprise, nothing is found yet again.
Meanwhile Brady thoroughly enjoys himself in the knowledge that the family will go though extreme distress once more and he will dominate the Media headlines. The more he can drag this stuff out, so the more sick pleasure he gets from the process as he ‘re-lives’ his ghastly deeds.