Speed Force - Jarrett Williams - Bog

"Wallace West and Avery Ho: the young speedsters have been Teen Titans, Justice Leaguers, and above all, members of the Flash Family. As they become aware of mysterious changes happening to the Speed Force, they race to Keystone City, where they encounter old friends, new threats, and a chance to forge their own paths. Get ready for chaos at S.T.A.R. Labs, and musical mayhem spreading across both Keystone and Central City--and the only way to save the day is a sing-off"--