29/52 Annabelle and Zosia go head to head with Guy over a special case.
31/48 Connie's trial begins. Rita helps a young girl get bittersweet justice.
4/4 After Salomon August Andrée's doomed Arctic crossing, investigators piece together events.
BBC Radio 4 Extra
15/217 Everything comes to a head for Jimmi and Heather. Karen takes Rob to a house auction.
3/4 A strange epidemic sweeps through the inhabitants of a quiet Essex suburb.
14/217 Zara gets frustrated by Sid but then uses him as a sounding board.
2/4 Two ambitious young doctors tackle a yellow fever epidemic in 19th-century Cuba.
13/217 Zara goes to Al for his opinion on her son, while Jimmi worries about Heather.
1/4 When a cholera epidemic strikes London in 1854, the mercurial Dr John Snow investigates.
12/217 A new wardrobe unleashes the monster in Niamh.