First broadcast 12th/13th September 2004.<br /><br />Tensions are running high in the 'leaderless' team as Leo and Harry clash over an investigation into an outbreak of breathing difficulties among children on the South Coast.<br /><br />Alex Hughes - Teacher<br />Rebecca Bridges - Lanny Forbes<br />Billy Hill - Paul Williams<br />Sam Friend - Pat<br />William Gaminara - Leo Dalton<br />Tom Ward - Dr. Harry Cunningham<br />Graham O'Mara - Man on Slab<br />Kate Fleetwood - Sienna Ricci<br />Emma Handy - DS Gwenda Newton<br />Tom Wu - Dr. Yip<br />Philip Bird - DCI Jim Tennant<br />Peter Wight - Lucas Garner<br />Ozzie Yue - Micky Choo<br />Phyllis Logan - Helen Wharton<br />Anton Lesser - Marcus Gwilym<br />Ian Peck - Daryl Butler<br />David Harewood - Angus Stuart<br />Natalie Press - Nicola Butler (as Nathalie Press)<br />Amymay Bowes - Nurse<br />John Byrne - Boat Yard Worker<br />James Tucker - Man in Cafe
