Filming has begun on the fourth series of popular Bath-based detective drama McDonald & Dodds, starring Tala Gouveia and BAFTA award-winner Jason Watkins.rn　　rn　　Comprising three feature length films (3 x120), the guest cast for the first story includes Toby Stephens (Lost In Space), singer/songwriter Pixie Lott (The Voice Kids), Lydia Leonard (Gentleman Jack), Daniel Lapaine (Catast...