Murs + ? + Slug = Felt 3
Also, for those of us who have been pondering to whom they might dedicate the latest installment (the first two were tributes to Lisa Bonet and Christina Ricci), we now have a clue: the next honoree, who will presumably be another actress, is hinted at with a series of dashes, hangman-style.
Halle Berry? Rosie Perez? Salma Hayek? Post your own guesses in the comments.