'Dexter' season four teaser poster

Showtime's teaser poster for "Dexter" season four is below and its message is clear: don't mess with a serial killer's kid. Now we're presuming that's just sauce on the tyke's face, but the globs are obviously supposed to give you pause. Dex becoming a dad is going to factor into next season and let's not forget John Lithgow also joins the cast as the "Trinity Killer" (because he kills in threes, naturally.).

Here's the poster: