How others will see it. I suspect that the film will appeal more to women than men, and those over 35 will like it more than younger viewers. Even within its target audience of early middle-aged women, however, viewers will find it moderately entertaining but not particularly engaging or significant.
How I felt about it. As a story, it doesn't have much credence. Fate teams up Branagh and Thompson (married in real life at the time) and they fall in love. Fair enough. However, in their past lives, they were lovers who met violent ends, and they remember these past lives under hypnosis, and retain these beliefs out of hypnosis. A shaky concept, but this is a movie, so I can accept the tall tale as a cinematic device.
What bothers me are the motives of the hypnotist/art dealer (Jacobi). At the beginning of the story, he is fascinated by Branagh's knick-knacks and appears greedy. These character traits quickly disappear. Instead, he helps Branagh and Thompson recover their past lives, which is certain only to prove that Jacobi is the actual murderer.
If his goal is to silence Branagh and Thompson, why help them in the first place, since they are unlikely to solve the murder mystery without his assistance. If his goal is to murder Thompson for a second time, why, especially since his motive the first time around (You kept mommy from dating Branagh) was rather weak.
The character played by Jacobi is a muddle. The real reason he kills all these people is because he's suddenly become creepy, and the film needs a villain to exonorate Branagh.
Some will see the film for its popular supporting cast. Robin Williams has only two small scenes, and roly-poly Wayne Knight (Seinfeld, Jurassic Park, 3rd Rock from the Sun) has maybe four scenes. Thompson is lovely and classy, as always, but Branagh isn't as engaging. It's unfair to call him conceited, because he's not. But he's also not an interesting enough personality to play the lead.