Ben Feldman

Drop Dead Diva's Ben Feldman has joined the cast of AMC's Mad Men, Deadline reports.

Feldman, who portrays guardian angel Fred on the Lifetime series, will play a new employee at Sterling Cooper Draper Pryce. He'll make his debut in this Sunday's episode, airing at 10/9c on AMC.

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The news of Feldman's casting coming just days before his debut is just more proof at how much of a spoilerphobe series creator Matthew Weiner is.

Mad Men returned last week to 3.5 million viewers. While those aren't Walking Dead numbers — that season finale attracted 8 million total viewers — it's still a series high for the AMC period drama.