Katie Sigismund

As Frank contends with a whistleblower within the NYPD, Danny and Baez investigate a suspicious case originally written off as an accident.

The duo suspects a murdered zoologist was killed because of his numerous affairs or his trailblazing research; Holmes finds himself the victim of identity theft after his medical records are stolen.

When a researcher with the Department of Defence is found dead, Nell must put her high IQ to the test when she goes undercover as his replacement. Meanwhile, Hetty's ability to lead the team is questioned.

The principal of a high school that is embroiled in a scandal is found shot dead in his car. Brenda and her detectives examine the murder scene but soon realise that an existing FBI inquiry overlaps with the case. A territorial conflict erupts, leaving Fritz and Brenda battling over who should be responsible for the investigation.

Lupo and Bernard investigate the demise of a troubled NYPD officer. Clues lead to a man trying to prove he's the illegitimate son of a famous President.

When Allison gets a skin graft on her hand after a burn, she is puzzled when the same hand acts with a mind of its own, gesturing uncontrollably. Also, Bridgette keeps her real role on the soccer team a secret from her parents.