Opinions differ, of course, but it's generally agreed that one of the high points - if not the high point - of the first "Dexter" series is Season 4 and Dexter's conflict with the Trinity Killer, played by the incomparable Jon Lithgow.

Now David Dastmalchian has been cast as the guest role of Gareth in the revival series "Dexter: Resurrection." Read More: Sitcom Star Joins 'Dexter: Resurrection' as Possible Serial Killer At this point nothing more than Dastmalchian's character's first name is known,

The news of Stonestreet's casting is just the latest in a growing list of big names joining "Dexter: Resurrection." Krysten Ritter has been cast as a killer named Mia, while Neil Patrick Harris will play a killer named Lowell. Likewise, both Uma Thurman and Peter Dinklage have joined the cast.