The rest of the Heelers are puzzled when PJ starts behaving strangely after a married couple is brought back to the station following a violent domestic. Maggie is especially worried, as it begins to look very much as though PJ is having an affair with this woman, a nurse at the local hospital. But what this woman really wants is PJ's help in breaking some bad news to her husband. PJ finally reveals this news to Maggie and explains what has prompted his strange behaviour. PJ hadn't thought twice in rescuing a bloodied driver from his mangled car and this woman has told him that she has caught HIV from a needle-stick injury while treating the same man. PJ could now also be infected and therefore so could Maggie. While they start their two-week wait for the results of PJ's blood test, the man is captured on a security camera holding up a service station with a syringe full of blood.