While the movie itself might not have been Oscar worthy material, actress Shawnee Smith certainly was. Smith took her role and ran with it, displaying an acting talent that she has yet been able to properly display (discounting her role as Amanda in the Saw movies). Smith truly carried the movie and shone as the true star that she is.
Michael Woods was also very good in his role, and Jane Sowerby (Max) did a good job as a supporting actress. Overall the movie was decent, but a bit predictable. Still, Smith was brilliant in her role, and any and all of the faults of "Secrets of an Undercover Wife" can be forgiven. I do not think that Smith could have asked for a better role; it gave her a chance to branch out of the horror genre for which she is best know and put her talents on display.
The only reason I would give this movie a 10/10 was for Smith's performance; otherwise, I would probably give it a 7.5/10. It wasn't bad by any means, nor was it dull, and for a Lifetime movie, it was actually quite good. It is a must see for any Shawnee Smith fan.