"I Didn't Kill My Sister" (a.k.a, "Murder Unresolved") is a story about two sisters so alike and so different. Yet there is a deep bond between Carmen Campbell and her younger sister Heather Pearson that endures long after the violent death of Carmen.

In the City View newscast, Carmen was a superstar alongside her dashing husband Mason Campbell. The team had vowed to continue their partnership on air even through a bitter divorce. Then, the unthinkable happened when Carmen was discovered floating in her swimming pool by her daughter Brooke and her sister Heather.

The film was routine in an odd assortment of forgettable secondary characters. The scenes at the news studio were sluggish, and the filmmakers introduced Seth, an addiction counselor at the Compassion Substance Abuse Center as a plot device to provide the clincher to Heather about who murdered her sister.

It was also never very convincing that Heather would be a suspect in the case. The detective was unconvincingly suspicious due to the lack any physical evidence. Young Brooke always seems to be on the verge of nervous breakdown. The sleazy attorney Sandra Conroy first tells Heather than she cannot represent her while Mason is her client. But we are then expected to believe that Heather would confide in Sandra anyway.

The most intriguing character was Heather, who was an aspiring news broadcaster herself. It was clear at the outset that the sensitive Heather was not jealous of her older sibling. To the contrary, she was loyal to Carmen while she lived, and she honored her memory in death. The bond of two sisters knows no bounds.

Excellent film with great plot twists.

What made this film so good was that they used the idea to condemn the guilty as had been done in the 1957 film with Patricia Neal and Andy Griffith-"A Place in the Crowd." By pulling a switch in both films, the guilty are shown for what they are.

A well known anchorwoman is murdered and suspects include the husband she is currently divorcing who is also her co-anchor on the news show, as well as a rebellious daughter and a sister who may be smitten by her brother-in-law.

The film also reinforces the age old idea of not trusting your lawyer.

Everyone goes through being under suspicion, but the sister really turns the table on those who are really guilty of the heinous crimes.

Most Lifetime thrillers don't require much guesswork to find out the killer. Usually it's fun to see the journey. But this one is tedious and obvious.

A rather frazzled looking Nichol Tom acts as a Heather, a PA to an anchor woman who is also her sister. When the anchor who is getting divorced is murdered, suspicion falls on her. The scheming lawyer of the husband and him plot to frame her. Heather does prove her innocence but by the time you don't really care. Things get mildly interesting as she accuses them in air and they have a studio confrontation.