Already in the vampire biz, the CW is now staking out zombies.Net has bought the hourlong spec script “Awakening” from Bill Laurin and Glenn Davis. Script centers on two combative sisters who come of age amid the beginning of a zombie uprising. Warner Bros. TV is producing with Reveille. Laurin and Davis, who teamed on the 2003 Lifetime series “Missing,” exec produce with Howard T. Owens, Carolyn Bernstein and Todd Cohen. Laurin and Davis are repped by APA.