The author of each of these books has indicated their intent to schedule these books for a free day for the Kindle versions today on Amazon. Sometimes plans change or mistakes happen, so be sure to verify the price before hitting that "buy me" button.
Hider/Seeker by Tom Claver
Two Birds by Vicki Tyley
Author's interested in having their free book featured either here on a Thursday or a sister site on a Monday, visit this page for details.