Caroline Catz: Caroline Catz. Actress: Doc Martin. Caroline Catz is an English film, television and theatre actress and narrator, best known for her role as Louisa Glasson in Doc Martin since 2004. Her other roles have included Detective Inspector Kate Ashurst in Murder in Suburbia, Detective Inspector Helen Morton in DCI Banks, and PC Cheryl Hutchins in The Vice.
Known For: Doc Martin (Louisa GlassonLouisa Ellingham), Murder in Suburbia (DI Kate Ashurst), DCI Banks (DI Helen Morton), Single-Handed (Dr. Maggie Hunter)