Josh Mankiewic: How to Kill Your Spouse ... And Get Away with It!

Josh Mankiewicz has been a "Dateline" correspondent for a hundred years, so who better to ask for the definitive playbook on offing your spouse?

We got Josh and his wife, Tee, Monday night leaving Bouchon in Bev Hills, and for some reason our photog wanted to know a foolproof way to do in the one you love(d).

BTW ... Josh and Tee got hitched 3 weeks ago.