Two weeks from now Sdcc 2013 will be winding down, so are there enough horror offerings to entice attendees back to the show for Day 4 (July 21)? With "Supernatural" kicking things off bright and early, we say, "Yes!"

Also on the schedule for Sunday (traditionally the family-themed day of the event) are "Under the Dome," an update on the adaptation of George R.R. Martin's werewolf/Pi/serial killer mashup novella The Skin Trade, a chance to build your own monster, surviving in a post-apocalyptic world, a Neil Gaiman Spotlight panel, a look at what's coming from Diamond Select Toys, a how-to on creating suspenseful, exciting, anxiety-inducing stories, and per usual, a screening of "Buffy the Musical: Once More with Feeling" to close things out.

Since the horror offerings are so light, we've expanded our Day 4 highlights list to cover such topics as the future of sci-fi novels, the 50th anniversary of "Doctor Who,...