The Mind Has Mountains

The Mind Has Mountains is the nineteenth episode of Lewis, taken from series five. It first aired on 17 April 2011.

Synopsis
A student dies during a residential clinical trial for a new anti-depressant. An investigation by Lewis and Hathaway is hampered by the college's professor of psychiatry, but the pair eventually establish that the trialists are acting under the malign influence of the drug.

Cast List

 * Laurence Fox as DS James Hathaway
 * Rebecca Front as CS Jean Innocent
 * Clare Holman as Dr Laura Hobson
 * Kevin Whately as DI Robert Lewis