After stabbing and killing her boyfriend, sixteen-year-old Mallory, who has no memory of the event, is sent away to a boarding school to escape the gossip and threats, but someone or something is following her.

Though he always seems to forget something that he's supposed to do, Jake surprises his mother by remembering something really important.

For ambitious, troubled architect Ray Jackson, the nightmare begins one sultry California night when his wife disappears. No phone call, no ransom note, no body, reveals whether Leigh is dead or alive. Then, suddenly, a woman shows up on Ray's doorstep demanding answers: Kathleen, an old friend of Leigh's. Ray wants answers, too, but his questions seem strange and shady to Kat. Suspected by his wife's friend and by the police, Ray launches a desperate...

Seventeen-year-old mathematical genius Peter Blankman battles his lifelong panic attacks as he tries to find his missing twin sister, Bel, and those who nearly assassinated his mother, a famous scientist.

Detective Inspector Vincent Ruiz doesn't know who wants him dead. He has no recollection of the firefight that landed him in the Thames, covered in his own blood and that of at least two other people. A photo of missing child Mickey Carlyle is found in his pocket-but Carlyle's killer is already in jail. And Ruiz is the detective who put him there. Accused of faking amnesia, Ruiz reaches out to psychologist Joe O'Loughlin to help him unearth his memory...

Drew, who has a hard time remembering things, forgets to wear his pajamas to school on Pajama Day but still manages to make the best of the situation.

Using her photographic memory Cam Jansen joins Eric in solving the mystery of how some of the school computers were stolen.

Seventeen-year-old Anna finds herself on the run from her father's enigmatic Agency, along with the four teen boys the Agency had been experimenting on, as they try to make sense of erased memories, secret identities, and genetic alteration.

Daniel simply wants to spend one last summer with his grandfather, Da, before his move to college and Da's dementia pull them apart, but when Da starts to let things slip about a secret life, Daniel must protect him from old "friends" who intend to make sure Da stays quiet.