Something in the post has a strange effect on Zara, and she finds herself treading on eggshells all day. Elsewhere, Al is in a good mood and looking forward to a visit from someone special, but who is it? Rob visits a woman with schizophrenia who has a strange obsession with eggs and claims she can hear babies, but is she just imagining things?

Zara is desperate to conquer her demons but finds herself in a losing battle with them. Emma fights Valerie's corner, and Karen has some new concerns about James. Jimmi is determined to get to the truth when the suspicious mother of a bipolar patient thinks her son is being groomed to do something terrible.