The Temporal Stone (Morgan Sisters, #2)

It's been a couple of months since Emma and Lana entered the Praxos Academy and life has been hectic ever since. What with regular A level classes combined with learning all about the supernatural world, control classes, self defence and fight night, the girls are constantly busy.
But when their world seems to stop right in front of them, they and their fellow Watchers, have a huge mystery to solve. A mystery which will lead them on a long road trip across south west England where they will meet all kinds of strange creatures, some intent on causing harm and others desperate to put a stop to the problem.