That awful day, December 31st.

Shelley's last day.

You see the last time she's captured on video,

which is entering the building at about 8 p.m.

Rodd says his daughter called him,

said something's wrong with mommy.

He sees his wife face down in the bathtub.

I got a call from Shelley's babysitter

when she said to me, there's been an accident.

Shelley slipped and fell, and I said,

Rose, is Shelley alive?

And she said no.

I heard that she had slipped in the bathtub

and died.

Obviously that was beyond shocking,

because she was young and she had little children.

As a detective, you could understand why this did look like an accident.

Absolutely.

Your sister's 47 years old.

Pretty healthy.

It didn't make sense.

But there are some things that seem inconsistent

...