He hasn't written a series, but I've read all of his books in their publication order during the last few months:
Final Girls
The Last Time I Lied
Lock Every Door
Home Before Dark
Survive the Night
The House Across the Lake
I'll finish his latest book, The Only One Left, this week.
Stephen King's Holly will be released soon as will Nathan Hill's Wellness.
Those are the two books I've been most excited about this year.