"Murder In My Mind" opens with a relatively plausible sci-fi premise - the transfer of one person's short-term memories to another via injected brain cells - but quickly becomes much more "fiction" than "science", as the recipient starts assuming the personality and feelings of the "donor" as well. In any case, the film kept me engaged from beginning to end, and that's what matters the most. Its premise is not strikingly original - didn't "Unforgettable" do something similar in 1996? - but it does add a twist on the usual serial killer formula. The characters are not strikingly original either - the young, inexperienced female FBI agent who has to prove her worth, the gruff but ultimately kind-hearted boss, the scientist who risks everything for love but later has second thoughts, the serial killer with a childhood trauma - but they are so well-played, by a well-chosen cast, that they become real. Nicollette Sheridan essentially has to play two roles - herself and the woman whose memories she now shares - and she is (and looks) pretty terrific. (**1/2)