Ripples of the Past — Damian Knight

After altering the past on the night of Christmas Eve, reluctant time-traveller Sam Rayner finds himself trapped in a new timeline in which he has no recollection of the last month. Although Sam and his friends are now safe, he has lost the girl he loves and remains no closer to reversing the plane crash that has torn his family apart. As he struggles to make sense of this new reality, Sam sets out to obtain a new supply of Tetradyamide, the drug that enhances his ability, and finds himself pursued by forces of both good and evil as he is sucked into a conspiracy that runs far deeper than he could ever have imagined.