This is one of those things I just didn’t think of picking up earlier:
Rice, Jeff (Richard Matheson). The Night Strangler. First edition paperback original, a Fine- copy with slight glue wrinkling near top of spine and slight spine fading, otherwise new and unread, signed by Richard Matheson. Novel by Jeff Rice based on Matheson’s screenplay for The Night Strangler, the sequel to The Night Stalker and the second TV movie starring Darren McGavin as reporter Carl Kolchak. Bought off eBay for $42. Copies that are both nice and signed by Matheson are uncommon.