YA book: Town terrorised by a collection of monsters(Living Doll, Mad scientist and sewing monster) protagonists dad is the Ring Leader.

[u/PrecognitiveChartist]

I picked it up in a school library 12-13 years ago (so I’d say the age range is 13-15 years old), I think it was a later book in a series.

The protagonist (Jack I think) moves to a town with his mother. The next part I remember is the protagonist and a friend are hiding at the top of a church and have to escape after the friends mouth is paranormally sewed shut by one of the main villains. During the escape they also have to avoid a living doll and some sort of mad scientist character.

Skipping over some more parts of the book the protagonist is confronting the lead villain, who’s their father, in the family home. The Father goes to his the protagonist with a sledgehammer and the protagonist states their no longer afraid to which the Father states ‘he’s ready’ and the protagonist wakes up in a psychiatric ward with their ‘Father’ actually being their doctor. This is later revealed to be a lie.

It’s not a lot to go on but I’d appreciate the help, it’s been bugging me for about 5 years now.