The heart-stopping sequel to Split Second Nat & Charlie are on the run & in more danger than ever Nowhere is safe for Charlie & Nat They have each other but Roman Riley's networks could reach them at any time Charlie believes the only option is to go undercover in Riley's team & sneaks away from Nat to pursue her plan alone Nat is desperate to find Charlie but his family are in danger & Riley is coming ever closer Even if Nat & Charlie can find each other again could being together be even more dangerous than being apart ?