My Cousin Is a Time Traveller

The fifth book in the My Brother is a Superhero series.
 
Luke's dad has bought a lot of gadgets recently and not one of them works as it's supposed to. Maybe it's because a machine-from-the-future is stalking Bromley, playing havoc with all the tech and trying to stop Star Lad going on a date. Could this be the Rise of the Machines? Luke knows what he must do - he just needs his fellow SCARF members to help, or it will be the end of everything...