Two doctors investigate the maiming and death of patients at the hands of a Dallas neurosurgeon.

Duntsch attempts to fix a disastrous surgery; Shughart builds her case against Duntsch.

Duntsch tries to mount a defense; Henderson, Kirby and Shughart seek answers to lingering questions.

Duntsch's victims confront him as Henderson, Kirby and Shughart set out to put him behind bars.