Tracy Smith

The detectives say Dr. Sills didn't seem nervous that a homicide team was in his home asking questions.

The detectives say Dr. Sills didn't seem nervous that a homicide team was in his home asking questions.

The detectives say Dr. Sills didn't seem nervous that a homicide team was in his home asking questions.

And when they interviewed the Sills' children, Mary Catherine and Eric, the 12-year-old twins, each told a similar story to their dad, that Suzanne had not been feeling well that night.

And when they interviewed the Sills' children, Mary Catherine and Eric, the 12-year-old twins, each told a similar story to their dad, that Suzanne had not been feeling well that night.

And when they interviewed the Sills' children, Mary Catherine and Eric, the 12-year-old twins, each told a similar story to their dad, that Suzanne had not been feeling well that night.

The migraine seemed to explain that large pot.

The migraine seemed to explain that large pot.

The migraine seemed to explain that large pot.

And the empty pill bottle was for a pain medication Dr. Sills said his wife took to treat her migraines. So did that make it sound more possible that she could have fallen down the stairs because she was suffering from a migraine?

And the empty pill bottle was for a pain medication Dr. Sills said his wife took to treat her migraines. So did that make it sound more possible that she could have fallen down the stairs because she was suffering from a migraine?

And the empty pill bottle was for a pain medication Dr. Sills said his wife took to treat her migraines. So did that make it sound more possible that she could have fallen down the stairs because she was suffering from a migraine?

And there seemed to be nothing in the couple's relationship to suggest another reason. What did you learn about the Sills' marriage?

And there seemed to be nothing in the couple's relationship to suggest another reason. What did you learn about the Sills' marriage?

And there seemed to be nothing in the couple's relationship to suggest another reason. What did you learn about the Sills' marriage?

Both children attested that their parents loved each other and said they rarely argued and were never violent. Detectives started piecing together a timeline of the weekend.

Both children attested that their parents loved each other and said they rarely argued and were never violent. Detectives started piecing together a timeline of the weekend.

Both children attested that their parents loved each other and said they rarely argued and were never violent. Detectives started piecing together a timeline of the weekend.

It was around midnight when Eric said he and his mom went back upstairs after she put the dogs away in their crate. Mary Catherine had gone to bed in her parents' bedroom. Suzanne was going to spend the night in Mary Catherine's room, which was the quietest.

It was around midnight when Eric said he and his mom went back upstairs after she put the dogs away in their crate. Mary Catherine had gone to bed in her parents' bedroom. Suzanne was going to spend the night in Mary Catherine's room, which was the quietest.