In Defence of Others - S4.E3

Deed has the case before him of a man charged with killing a paedophile, but the jury find the defendant not guilty. After his acquittal, the man calls a press conference and sends out a message calling for similar actions elsewhere. Meanwhile, Marc Thompson, Michael's real father, arrives in England from overseas. This seems to end Jo's hopes of adopting Michael, but she starts dating the new arrival, sending Deed into a jealous rage. Deed then unwisely starts a new affair with a woman appearing in his court as a claimant in an action, and Jo decides to move with Marc to South Africa.