When eleven-year-old Robby takes drastic steps to stop his widowed father from developing a new love interest, his friend Beth has to step in and help him come to terms with the situation.
When their mother starts to date the mystery man on the fifth floor who has been instructed by his agent to "eliminate the children" by the first of May, eleven-year-old Caroline and her older brother figure they're targeted to be the victims of a savage crime.
Twelve-year-old Toby and her sister live with foster parents while their widowed mother is in a state hospital and Toby is increasingly torn between her love for her mother and her growing affection for her foster family.
A motherless twelve-year-old finds an australopithecine in a ravine during the winter and brings him home where his befuddled father, an eminent scientist, thinks it's a new housekeeper, Mrs. Link.