Terror By Night by Vic Crume, 1971.

This book is part of the Partridge Family book series, based on the The Partridge Family tv show.

Shirley has been thinking that she and her children could use a vacation, and her family band’s manager, Reuben Kinkaid, suggests a place where they could have a little vacation and do some rehearsing.  Reuben arranges for the family to rent a large house with several acres of land attached in a small New England town not far from Salem, Massachusetts.  That should have been their first clue.  That, and the fact that the town’s name is Haunt Port.

At first, the Partridges are just thinking about how they can rehearse without disturbing anyone on such a big place, and Danny and Chris want to try camping out.  However, when they arrive in town, they learn that the name of the house they’ve rented is Witch’s Hollow and that it’s close to a place called Hangman’s Hill.  Soon after the family arrives at the house, Keith and Laurie also find a dummy hanging from a tree with a note that says, “Welcome! The Hangman.”  It’s pretty disturbing, but Keith and Laurie decide to hide the dummy and not scare the others.  They don’t know who is behind this awful joke, but they don’t want to give that person the satisfaction of seeing them react to it.

However, the disturbing things don’t end there.  The family’s dog, Simone disappears.  Also, people in town seem to have a strange attitude toward the house’s cook/housekeeper, Mrs. Judbury, and her daughter, Prudence.  Prudence is sullen and anti-social with a habit of catching toads for fun.  Keith has to admit that he can see how Prudence might have gotten a reputation for being a witch, but there’s more behind the strange happenings at Witch’s Hollow than that.

Simone eventually returns, although it’s clear that she’s frightened and hasn’t been fed well, and Mrs. Judbury tells the family the story of her family’s history in Haunt Port.  One of Mrs. Judbury’s husband’s ancestors was one of the accusers at the Salem witchcraft trials, but later, when people began to realize that they had executed innocent people, some of the accusers themselves found public opinion turning against them.  This ancestor decided to leave Salem and go to Judbury Port (the old name for Haunt Port) because he had family there, but he and his wife were never really accepted there, either.  This man later hanged himself in despair (at the place called Hangman’s Hill), and his wife later died alone, also shunned by the town.  Although some of the townspeople might feel bad about how things ended up with the Judburys, the old uneasy feelings about the family have remained, and Prudence’s stand-offish attitude, combined with her mother’s apparent psychic premonitions, has fueled some of the old stories.

At one point, Keith tells Prudence that he knows why she acts the way she does, because it’s much easier for her to keep her distance from people and behave strangely than it is for her to try to learn to get along with them and make friends.  Prudence isn’t responsible for what the townspeople did in the past, but she isn’t helping things in the present.  Jane Parsons, whose family owns the local store, also helps in a way because she and Prudence are cousins, and Prudence joins her in welcoming a cousin of their and his friend when they visit town.  As Prudence becomes friendlier, she and her mother become allies in trying to figure out the mysteries of Witch’s Hollow, which turn out to have less to do with past wrongs than current crimes.

The book is available to borrow for free online through Internet Archive.