4.01 Partners in Crime
Cardiff – Fat Cat Cafe
Cardiff – Landmark Place
Cardiff – Nant Fawr Road
Cardiff – Odeon Cinema
Cardiff – Stallcourt Avenue
Cardiff – Waterloo Gardens

4.02 The Fires of Pompeii
Rome

4.04 The Sontaran Stratagem
Margam Country Park
Cardiff – Nant Fawr Road

4.05 The Poison Sky
Margam Country Park
Cardiff – Nant Fawr Road

4.06 The Doctor’s Daughter
Cardiff – City Hall
Cardiff – Mark Street

4.07 The Unicorn and the Wasp
Tredegar House

4.08 Silence in the Library
Cardiff – Palace Road
Dyffrn Gardens
Victoria Park

4.10 Midnight
Celtic Manor

4.11 Turn Left
Cardiff – Clearwater Way
Cardiff – The Conway
Cardiff – Court Road
Cardiff – Franklen Road
Cardiff – Hunter Street
Cardiff – Nant Fawr Road
Cardiff – Sophia Gardens
Cardiff – St Isan Road
Penarth – Machen Street

4.12 The Stolen Earth
Cardiff – Brook Street
Cardiff – Optometry and Visual Sciences
Penarth – Queen’s Road
Penarth – Robinswood Crescent
Pontypridd – Fford Gerdinan
Pontypridd – Hawthorn Road
Pontypridd – Market Street

4.13 Journey’s End
Castell Coch
Cardiff – Nant Fawr Road
Penarth – Robinswood Crescent
Southerndown Beach