SOLVED. YA Fantasy/Sci-Fi read around 2010-2012. Part of a series. [s]

[Rayne]

Boy goes to live with grandparents(?), hides in a barn, whenever he tries to leave the village he comes to a crossroads and can’t escape. Finds a lab(?) in the middle of the woods. He has magical talents and the sequel is about two twins or brother/sister who are also magical and live in Las Vegas, possibly work in a circus.

[Robert]

Possibly , The power of five seriesby Anthony Horowitz. Specifically, Raven's Gate: Matt has always known he has unusual powers. Raised in foster care, he is sent to Yorkshire on a rehabilitation programme, only to find himself in the midst of sinister goings-on. Matt investigates and uncovers a terrible secret – eight guardians are protecting the world from the Old Ones, beings banished long ago by five children. But devil worshippers want to let the Old Ones back in; and, Nightrise: A gate has been opened. The Old Ones have been released. And now the third and fourth of The Five -- twins with a mysterious psychic bond -- are joining the fight.

A development of the series originally published as The Pentagram Chroniclesin the 1980s where the equivalent books would have been The Devil's Door Bell ("Thirteen-year-old Martin's new life with a foster mother on a Yorkshire farm quickly becomes a nightmare where evil and unbelievable happenings seem to threaten his life." and The Silver Citadel ("Nicholas races against time to save Jeremy, the brother with whom he shares a mysterious psychic bond, and stop the evil forces emanating from the Silver Citadel")

[Rayne]

This is it! Thank you 😁