Adrift

This is the Wikipedia verified version of a plot to one Torchwood episode which is all about missing persons, loss, desperation and finding that person again.

"Jonah Bevan is walking home across the Cardiff Bay Barrage when a bright light appears. One second later he is gone. Seven months later, at the instigation of PC Andy Davidson, Gwen is investigating the disappearance of Jonah. Her research reveals there are more cases resembling Jonah's disappearance. Toshiko discovers that these disappearances happened during a negative spike of rift activity, which were previously discarded as aftershock. Gwen then compiles a list of all missing persons and informs Jack. However, Jack tells Gwen that nothing can be done and orders her to stop the investigation, which she refuses to do.
The investigation slowly turns into an obsession and takes a toll on the relationship between Gwen and Rhys. Returning to the Hub, Gwen interrupts Jack and Ianto during a sexual encounter and, after apologising, tells Jack that she wants to continue the investigation. Jack sternly refuses, but Ianto secretly gives Gwen a GPS device with coordinates to a hidden location, leading Gwen to a facility on Flat Holm. It harbours 17 of the missing people that the rift took and subsequently brought back, including Jonah, the boy she has been looking for. However, he has aged 40 years and is very deformed. Gwen also finds Jack there, and she demands access to Jonah. Jonah tells how he was stuck on a "burning planet" and how he was taken into a building that was actually a rescue craft, from which he witnessed the burning of a solar system. Afterwards, Jack reveals that he set up the facility when he first took command of Torchwood, in order to care for the victims of the rift, who had previously been locked away in the vaults.
Gwen brings Nikki, Jonah's mother, in to see him. At first she is horrified, believing it to be a cruel joke, but Jonah starts telling her things that only he would know. Nikki calms and they hug for a moment, but one of the staff tells Nikki to get away from him. She resists and says that she can take care of him. However Jonah starts screaming, a scream so horrible that everyone flees. In a voiceover, Gwen reveals that the scream lasts for 20 hours every day because he looked into the heart of a Dark Star, which drove him insane.
A week later, Gwen goes to see Nikki, who implores her not to show the island to anyone else. Gwen takes down her notes over the missing and Nikki packs up Jonah's room. At home that night, Gwen prepares a romantic candle-lit dinner for Rhys, who lets her cry into his chest."

I believe this highlights the mother's desperation and integrity in a search, this mainly being carried out by the character Gwen who becomes the most active in the search for Jonah, putting Jonah's mother in a kind of shadow, suggesting that Gwen is more determined than Jonah's mother Nikki. Although there is a particular scene that places focus on Nikki's desperation, where Nikki collects hundreds of videotapes worth of crowd footage, just to find her son. The detached bond between Nikki and Jonah takes over Nikki's mind and it's by on unimaginable to understand what it feels to lose your child. There should be a heavy focus on a mother/father's loss within the book.