First broadcast 4th/5th November 2021.<br /><br />Adam Dalgliesh is sent to a nursing school to investigate the death of Heather Pearce, a student poisoned during the demonstration.<br /><br />Helen Aluko - Christine Dakers<br />Alice Nokes - Julia Pardoe<br />Eliot Salt - Madeleine Goodale<br />Robin Kristoffy - Shirley Burt<br />Alex Kristoffy - Maureen Burt<br />Beccy Henderson - Heather Pearce<br />Fenella Woolgar - Sister Mavis Gearing<br />Amanda Root - Sister Brumfett<br />Siobhán Cullen - Josephine Fallon<br />Richard Dillane - Dr. Stephen Courtney-Briggs<br />Bertie Carvel - DCI Adam Dalgliesh<br />Jeremy Irvine - DS Charles Masterson<br />Avin Shah - Rohan Chopra<br />Natasha Little - Matron Mary Taylor<br />Syd Ralph - Miss Collins<br />Lily Newmark - Morag Smith<br />Laura Hughes - Librarian<br />Brid Brennan - Mrs Louise Dettinger
