They are beating this horse to death
A third series? Really?
shareIt's a second series, not a third. 24 and 24: Live another day are count to one series ( it's directly continue the story of Jack Bauer).
24 Legacy is a spin off that will propably have return Characters of the original 24. So if you don't want to know how Jack Bauer, Chloe Obrain and Tony Alemdia story line will be resolve then don't watch it.