A witness comes forward with new information about Teresa's car. Kathleen attempts to build the timeline of what happened to Teresa on Oct. 31, 2005.

Kathleen makes two of the biggest discoveries of the case. Brendan's lawyers take his case to the next level.

Kathleen uncovers evidence about one of the State's star witnesses. Brendan's case takes another unexpected turn.

Kathleen's forensic experts review the evidence found in Steven's burn pit. A 1996 statute limits Brendan’s chances of success in federal court.

Brendan's lawyers work to prove his conviction was based on a coerced confession. Kathleen tests Steven in new ways and visits the alleged crime scene.

Searching for evidence of tampering, Kathleen visits Steven’s trailer. A new twist in Brendan's case sends his family on an emotional roller coaster.

Kathleen runs new tests on the bullet believed to have killed Teresa Halbach and tracks Teresa's movements on the day she disappeared.

Kathleen obtains access to some of the original physical evidence from the case. The former prosecutor holds a press conference.

Powerhouse lawyer Kathleen Zellner offers to take Steven's case. Brendan's postconviction lawyers fight in federal court to try to get him released.

Cautiously optimistic, Brendan and his family wait to hear important news about his case. Kathleen files a motion for new scientific testing.