From Amazon.co.uk:
Simon saved his best friend, Kat, from the clutches of the Company and their high-tech VR gaming experience, Otherworld. But it was at a steep price. Now he, Kat, and their friend Busara are on the run. They know too much. About the Company’s dark secrets. About the real-life consequences of playing Otherworld. And about Kat’s stepfather’s involvement in everything. The group is headed to New Mexico to find Simon’s old roommate, who is a tech genius and possibly the only person who can help them reveal the truth about the Company before it’s too late and the line between what’s real and what’s fantasy is erased… forever.

Left at the book exchange.
Located at stall numbers 356, 357 and 358.

Release #13 for the 2019 4 Elements Challenge.

Was a compelling read with the classic set up for a second installment, would definitely recommend.