Wil Wheaton will be returning to Syfy’s Eureka , again playing Dr. Isaac Parrish.

Last seen in the fourth season episode All the Rage , which aired last summer, Wheaton will appear in seven episodes to air in the second half of the season which begins next month.

Wheaton’s character Parrish will “butt heads” with Dr. Douglas Fargo ( Neil Grayston ) for the attention of Dr. Holly Martin ( Felicia Day ), a “quirky Department of Defense” visitor to Eureka.

Also appearing on Eureka this summer is comic book legend Stan Lee ( Spider-Man ), who will make a cameo appearance in the summer premiere as an expert on gamma rays.