The holidays are approaching, and it's time to start haunting store shelves if you like that sort of thing.

I haunted Walmart, Target, Best Buy and Gamestop today and the results are below. (The stock in your local stores will vary, but this is something of an indication.)
If you see a recently released adventure in a national chain store that isn't mentioned below, post and let us know where it can be found.
WalmartNancy Drew: Warnings at Waverly Academy
Nancy Drew: Ransom of the Seven Ships
Legend of Crystal Valley
Best BuyCasebook Episode 1: Kidnapped
CSI: Deadly Intent
Memento Mori
Nancy Drew: Warnings at Waverly Academy
Nancy Drew: Ransom of the Seven Ships
Sherlock Holmes vs. Jack the Ripper
Still Life 2
GamestopSherlock Holmes vs. Jack the Ripper
Still Life 2
A Vampyre Story
CSI: Deadly Intent
Also, some older games at discounted prices -- Paradise and Outcry, for instance
TargetChronicles of Mystery: The Scorpio Ritual
Art of Murder: Puppeteer
Memento Mori
A Vampyre Story
Casebook Episode 1: Kidnapped
In jewel case (EDIT: or rather, small cardboard case) form:
Physicus
The Immortals of Terra: A Perry Rhodan Adventure
Sherlock Holmes: Silver Earring
Riddle of the Sphinx
The Omega Stone
Safecracker
Journey to the Center of the Earth
The Target Nancy Drew bonanza -- Target has by far the best Nancy Drew selection. They have Warnings at Waverly Academy and Ransom of the Seven Ships, plus several past Nancy Drews in both boxed and small cardboard case form.