I didn't see this posted, but Big Fish games has 2 games for 99 cents. Mystery Chronicles: Murder Among Friends and PuppetShow: Mystery of Joyville. Just use coupon code "slickmurder" for Mystery Chronicles and "slickpuppet" for PuppetShow: Mystery of Joyville.
http://www.bigfishgames.com
http://www.bigfishgames.com