It's late on Friday night when Casey's mobile starts to ring. She is expecting it to be her daughter, Riley. But it isn't Riley. It's a woman from the Emergency Duty Team. So begins Casey and Mike's latest fostering challenge - a 15-year-old girl called Keeley who's run away from her long-term foster home 25 miles away.

Casey's Unit is, as ever, full of troubled, disaffected pupils, and new arrival Leo is something of a conundrum. Thirteen-year-old Leo isn't a bad lad - in fact he's generally polite and helpful, but he's in danger of permanent exclusion for repeatedly absconding and unauthorised absences. Despite letters being sent home regularly, his mother never turns up for any appointments, and when the school calls home she always seems to have an excuse.

Brought to Casey as a short-term emergency placement, 14-year-old Adrianna arrives with nothing but her gratitude. Having turned herself in to a social services office some 100 miles away, she has no possessions, no English and, apparently, no history - not that she's willing to share, anyway. She is a beautiful young Polish girl, with the bearing of a ballerina, but is terrified, malnourished and unwell.

Best-selling author and teacher Casey Watson shares the horrifying true story of Kiera Bentley, a 12-year-old girl with a deeply shocking secret she's too young to even understand. When Casey first meets Kiera, a small, slight girl who's just lashed out at a fellow pupil in assembly, she immediately senses something's wrong. Something in Kiera's eyes alerts Casey that this is an "old head on young shoulders", and with Kiera's constant tiredness and self-soothing habit of pulling her hair out, she follows her instinct and takes Kiera under her wing.

Casey Watson is back, doing the job she does best - rolling up her sleeves and fostering the children who, on first meeting, seem like hopeless cases. But when she meets Miller and discovers the truth about his disturbing childhood, even Casey begins to doubt if this child will ever be able to accept love. Found naked and alone on a railway track, Miller was just five when he was first admitted into the care system. 

The Watsons are no strangers to sibling placements, but when Casey takes the call from her supervising social worker one frosty January morning, she can instantly tell from the tone of her colleague’s voice that there’s a complicated case ahead. And she’s right. A four-day-old baby boy called Tommy - born in prison - plus his four-year-old half-brother, the lively Seth. A month later, the very moment she gets out of prison, the boys’ mother - a 19-year-old called Jenna - also follows.

Rejected by her mother and excluded by her school, Flip is a little girl desperate to be loved. ‘Am I ugly, Mummy?' are the first words that little Phillipa says to Mike and Casey as she stomps into their lives on a hot August afternoon. She has a Barbie doll in one hand and a pink vanity case in the other, and the bemused Watsons can only stare in amazement at this tiny eight-year-old girl who is being guided into the room by her social worker.

Bestselling author and foster carer Casey Watson shares the shocking true story of Tyler, an abused eleven-year-old who, after stabbing his step-mother, had nowhere else to go. Knowing a little of Tyler's past - his biological mother, a heroin addict, died of an overdose when he was three - Casey feels bound to do her best for him. It isn't easy; Tyler continuously lashes out, even trying to attack Casey herself.

Just when Casey thinks her foster care duties are done, she’s asked to look after Sam, a troubled nine-year-old with a violent streak who drove his previous guardians to release him of their care. It soon unfolds, however, that this is no simple case. Determined to get to the root of Sam’s behaviour, Casey is committed to uncover his mysterious past only to find out something far darker than she ever imagined.

Experienced foster carer Rosie Lewis is used to looking after children from difficult home situations, but she finds herself struggling when she agrees to take in Taylor and her younger brother, Reece, for a short while. Taylor tries desperately not to fit in, to be the tough young teen that she has had to become, making it clear that she cares about nothing and no one, while Reece is just desperate for someone to love him.

The heartbreaking true story of a young, troubled mother who needed help. The 16th fostering memoir by Cathy Glass. It is the first time Laura has been out since the birth of her baby when Cathy sees her in the school playground. A joyful occasion, but Cathy has the feeling something is wrong. By the time she discovers what it is, it is too late. This is the true story of Laura, whose life touches Cathy's in a way she could never have foreseen.

In her new book, Cathy Glass, the number one best-selling author of Damaged, tells the story of the Alice, a young and vulnerable girl who is desperate to return home to her mother. Alice, aged four, is snatched by her mother the day she is due to arrive at Cathy's house. Drug-dependent and mentally ill, but desperate to keep hold of her daughter, Alice's mother snatches her from her parents' house and disappears.

Can I Let You Go? is the true story of Faye, a wonderful young woman who may never be able to parent her unborn child. Faye is 24 and pregnant and has learning difficulties as a result of her mother's alcoholism. Faye is gentle, childlike and vulnerable and normally lives with her grandparents, both of whom have mobility problems. Cathy and her children welcome Faye into their home and hearts.

Experienced foster carer Rosie Lewis takes on the heart-breaking case of Megan, a baby born with neo-natal abstinence syndrome and a cleft palate. Addicted to drugs from birth because of her mother's substance abuse during pregnancy, new-born Megan is taken into Rosie's loving care. Rosie is supposed to help Megan find her new permanent home, but it turns out that Megan has already found her 'forever mummy' in Rosie.

Nine-year-old Archie and his five-year-old sister, Bobbi, are taken into emergency police protective custody after an incident of domestic violence at their family home. Rosie collects the children from their out-of-hours foster carer on New Year's Day and instantly recognises Archie from a domestic violence workshop she helped with. Rosie remembers that when asked what he enjoyed most about the course, Archie said, 'The biscuits'. Social workers are concerned that Archie and Bobbi have been neglected.