In chapter seven, as soon as Jacob wakes up he tells his dad he is going to the other side of the island and that he will be back for dinner. When he gets to the house Emma pulls him to sit down and watch the show the peculiars put on showcasing their powers. After the show he and a few of the children talked for a while. He and Emma walked to the bog and said their goodbyes. Jacob returned to his time and his dad had been looking for him. All the men on the island, for the most part, were being questioned on who killed a bunch of sheep. Jacob was the prime suspect, but eventually was let off the hook because they blamed two other teenage troublemakers. He fell asleep thinking of Emma.
In chapter 8, Jacob returns to the house and is given a lecture from Miss Peregrine about discussing the future with the
children. He meets Enoch and his power is to take non-living things and make them living by using real hearts. He tells him
about Victor and after discovering he is dead, Jacob finds Emma's diary in the next room over. He read a little bit, but Emma
caught him and they ended up in a heated discussion about his grandfather. They planned to meet later that night to talk when
everyone was asleep. A weird guy was in Jacob's time now. His dad was getting a weird vibe from him, especially when he
ordered raw steak. A while later Jacob returned to the time loop to talk with Emma. They went over to the water where it was
more private. Emma explained that non-peculiar people couldn't travel through time loops. Also that his grandfather had a
special talent, to see the monsters.
In chapter nine, Emma and Jacob return to the house and Ms. Avocet (an ymbrine like Ms. Peregrine) is there. She is very ill. She tells Ms. Peregrine that wights (the monsters) came and abducted another ymbrine. The children went to bed and Jacob talked to Ms. Peregrine about what the wights wanted to do and how they disguised themselves. Jacob mentioned that a new arrival on the island seemed suspicious. Afterward Jacob went back to his time. He spoke with his father and told him to keep his distance from the weird guy that had just arrived in town. He wanted to tell his father why, but he knew his dad wouldn't believe him.
In chapter 10, Miss Peregrine keeps the house under a lock down mode. The children aren't allowed to go out because of the dangers of the monsters. Jacob is stuck deciding whether to stay with the children or his time for the rest of his life. Horace, one of the peculiar children, had a nightmare that may or may not come true. Back in Jacob's time a murder was committed. Martin was fished up in a net and was pronounced dead. Once the children and Miss Peregrine hear about this, some of the children along with Jacob decide to sneak out to ask Martin what really happened to him. The children going were Emma, Millard, Bronwyn, Enoch, and Jacob. They leave the house and enter Jacob's time to go find Martin in the freezer he is being kept at. Within a while they succeeded and Enoch took one of the sheep hearts he had brought. After a few tries with a few different hearts Martin came to life. They asked Martin who killed him, but Martin was hard to understand. Eventually they found out that a hollowgast (hollow) did this to him. Someone appeared behind them, a wight. Jacob discovered this wight had been following him his whole life. The wight was his bus driver and psychiatrist, Dr. Golan, just to name a couple. The wight called his friend, a hollow, and tried to defeat the children with it. Luckily the children escaped okay at the moment. Later on they split up and Jacob kills it. When the children arrive at the house they see that the loop hadn't reset and the wight took Miss Peregrine and her friend, as birds, as well as trapped the rest of the children in the basement. The team of children who were out before left again to save the ymbrines. They find Golan on Emma's boat in the middle of the water. After a tough battle of Golan shooting and hitting Millard, Jacob and Emma go to finish him off. Jacob succeeds and now they must find where the ymbrines were thrown. They find the ymbrines, but also run into another wight who tries to kill them. All of the children get to safety. When Miss Peregrine tries to change back to a person she can't.
In chapter eleven, when everyone gets to the house they have to figure out where the wights are taking the ymbrines. Horace draws a place that he saw in his dream. It's very vague, but it's something. Emma took out a map of different time loops to try and find out exactly where to go. Jacob returns home in the morning for a short while to tell his dad where he has to go. He wrote a letter, but threw it out because his dad would never believe such a thing. His dad walked in and they start talking. His dad yelling more and more with each thing Jacob says. Surprisingly Emma, Olive, and Millard come to help Jacob with the explanation. They show their powers and his dad just goes to sleep because he thinks he is dreaming. Emma leaves him proof they were there. They all go to the time loop and take the photo albums on the boats they are taking to track down the wights. All of them row into the sunset.