『速度与激情9』介绍:Afterbeingcomplicitinacostumejokethatendsinafatalaccidentandapactofsilence,agroupofyoungpeoplewillbethreatenedbyananonymouswriterwhowantstorevealhisdarksecret.Theirstalkerthreatenstopostabloodyhorrornovelbasedonthemonsocialmedia.Eachchapteroneofthemwilldie.Whiledistrustingeachother,thegroupwillbeginafightforsurvivalinthemiddleoftheuniversitycampus.Anyoneofthemcouldbethenextvictim,orthekiller.