The detectives spoke to Rachel about her 911 call reporting the body in the pool.

The detectives asked David for the details of how he discovered the body.

The detectives spoke to Alyx's father the morning after she was found dead.

The detectives spoke to Barbara about her stepdaughter's relationships and activities before her death.

The detectives spoke to the landscaper who was at the Byrns house the day Alyx died.

The detectives asked Alyx's boyfriend to come in for a conversation.

The detectives asked Katie to describe Alyx's state of mind before her death.

The detectives also spoke with Alyx's other close friend about the friends' relationships.

The detectives asked Josh about some information in the fingerprint report.

The detectives asked Katie about the relationships in and around the Byrns family.

The detectives asked Megan for more information about what they learned from Katie.

The detectives tracked down Alyx's birth mother and brought her in for a conversation.

The detectives asked Rachel to be more forthcoming about the Byrns family.

The detectives asked Barbara to come in again to discuss some new information.

The detectives asked David to fill in the details he failed to mention previously.

The detectives wanted to hear what Paul had to say about recent revelations.

After searching Stephen's home, the detectives wanted to have another chat with him.