Martin (Aidan McArdle) is a stay-at-home Dad, looking after his four-month-old baby son Tom while wife Ruth (Zoe Telford) goes out to work.  But all is not well at home.  Is that interference from next door that Martin has started to hear over the baby monitor – the strange disembodied voice whispering nursery rhymes to his child – or something altogether more sinister?  Ruth can’t hear anything but Martin knows something is wrong and seeks out Alison for help.

When Martin calls to see Alison, Robert is with her and all three of them return to the house.  At first Alison can’t identify anything specific but Robert notices the bath taps are dripping and thinks he can hear something.  Before he can explain it, he collapses on the bathroom floor.

Under increasing strain, Martin discovers that all the locals were already aware that a baby had died in the house.  He asks Alison to come back and the sounds of gushing water filling a bath draw her to the bathroom.  Placing her hand inside the empty bath, it emerges soaking wet.  With dawning horror she realises that the baby died in the bath, when its father turned away for a few minutes.  Alison now knows that there is a supernatural existence there. 

Once more alone in the house with his son, Martin discovers that Tom cries more when the baby monitor is moved away from his crib.  While he stands there holding it, the voice from the monitor says "You don’t deserve him."  The next day, Martin asks Alison to come back once again but this time Ruth is there when they return.  Alison tells her there is a malign spirit in the house and advises them both to take Tom away.  Ruth is furious with Martin for contacting a medium, and convinced they are both mad.  With no-one to turn to, Martin starts drinking heavily, unconsciously copying the reaction of the dead baby’s father to his negligence.

Returning home from work Ruth finds Tom gurgling in his crib and Martin passed out on their bed, an empty wine bottle lying on the floor.  She hears the sound of gushing bath water and, horrified, hears for herself the baby monitor starting to murmur.  As she draws close to it the voice says to little Tom, "she’s a bad mother.  She doesn’t love you."

Terrified now, Ruth wakes Martin and they start to pack to spend some time at her mother’s.  When Ruth takes the bags to the car, Alison is standing there.  She had been highly disturbed at home, thinking about the danger Tom was in, and decided she had to have one last try at helping the Cable family.  While they are talking in the street, Martin discovers Tom has filled his nappy and needs a bath.  He bundles Tom into the bathroom, accidentally picking up the baby monitor too.  When he runs the bath and lifts Tom in, the monitor starts speaking again.  In a fit of anger, Martin picks it up and carries it out onto the landing, throwing it down the stairs.  As it lands, smashing into pieces, the bathroom door slams shut behind Martin, trapping Tom alone in the bath.  He hammers on the door but it won’t open.  Out in the street, Ruth and Alison hear his shouting and rush in to find Martin has finally managed to open the bathroom door, but it’s too late.  Tom has drowned.

Back on the stairs the broken pieces of the baby monitor come to life and the voice can be heard, soothing baby Tom.  "Good baby…good baby…"

Lots of chills in this week’s installment which raised the standard back to the level of the first episode after last week’s mediocre offering.  Excellent writing from Mark Greig and the camera work and direction set the chilling tone perfectly, especially in the narrow corridor to the bathroom and the close-up shots around the crib.  Set dressing and props were top drawer too – I found the "stars and moon" mobile particularly disturbing.

There were plenty of developments with the character-driven sub-plots this week too.  Alison’s beginning to tip over into obsession as she becomes haunted by her late mother and starts to do the kind of things she did: throwing stuff away, cleaning up all the time and saying everything was dirty.

More interesting and with long-term potential, Robert’s discovery, shortly after spending the night with his ex-wife Jude (Anna Wilson-Jones) for the first time in several years and starting to rebuild/rekindle their relationship, that he has a malignant brain tumour knocks him for six.  Worse, it is in his brain stem, so surgery is impossible.  He has months, perhaps only weeks, to live.  This made me wonder whether the writers are going to go the whole hog and have Robert die, only to spend an entire new series communicating with Alison from the other side.  Now that would be an interesting twist and I don’t think it’s been done since Randall and Hopkirk (Deceased).