Don't Call Me Baby - S11.E28

Despite allegations by her ex-boyfriend Theo that she isn't all she appears to be, Jonesy stays firm to Donna in trying to protect her. She soon moves in with him.

Only Susie is suspicious of Donna, a suspicion seemingly confirmed when Jonesy's room is trashed. He arrests Theo, whom Amy recognises from her time in Melbourne - he was involved in an assault on a known drug dealer. Tom agrees with Amy, and refuses to give Donna police protection since she may be involved.

Jonesy is not happy, pleading with the others and ultimately storming out of the station to go and personally protect Donna. The cops begin to consider that they've gone too far, but a defiant Tom stands firm - Jonesy had better come back, or he'll be out of a job...