A murderer is using his computer expertise to blackmail hospital doctors, and threatens that a patient will die every twenty-four hours unless his demands are met. Commander Blake has her own personal problems - she is being stalked by the sister of a victim of James Lampton and is stabbed in the arm, and her sister is still fighting her battle against cancer.
| Name | Type | Role | |
|---|---|---|---|
| Lynda La Plante | Writer | ||
| Nicholas Ball | Guest Star | ||
| Jeremy Zimmermann | Guest Star | ||
| Jemail Hanks | Guest Star | ||
| Kate Henry | Guest Star | ||
| Matthew Cottle | Guest Star | ||
| Susan Wooldridge | Guest Star | ||
| Katherine Whitburn | Guest Star | ||
| Sean Chapman | Guest Star | ||
| Saskia Reeves | Guest Star | ||
| Anne Kidd | Guest Star | ||
| Charlie Caine | Guest Star | ||
| Martin Wenner | Guest Star | ||
| Alexandra Gilbreath | Guest Star | ||
| Richard Durden | Guest Star | ||
| Patti Love | Guest Star | ||
| Geoffrey Freshwater | Guest Star | ||
| Sara Dee | Guest Star | ||
| Matthew | Guest Star | ||
| Charles Beeson | Director | ||
| Lynda La Plante | Director |