SOLVED. Mystery. A boy sees a "ghost" during a train. [s]

[Erica]

i read this book about 3 years ago(2018), the main character is a boy, i believe he is in highschool. His father wants him to go an appointment i think. He's in a train i forgot, but he sees a girl. i forgot the begining but he trys to save the girl and in the end he sees her leaning in a wall, when he had thought he lost her. i forgot their names but it ends in like a cliffhanger. also i believe the cover is a fountain. Spoilers ahead ?

[Paige]

Total shot in the dark: The Night Tourist

[Erica]

Paige wrote: "Total shot in the dark: The Night Tourist"

omg yes!! thank you so muchh!

[Paige]

Yay! Glad I could help you find your book.