I have seasons 1 - 4 of The Dead Zone on DVD and on the back of season 2 it lists some Special Features, but i can't find them on the discs.

Can anyone shed any light?

Region 2 DVD's of The Dead Zone don't have any special features, if it's listed on the back then that's a mistake because only region 1 DVD's of The Dead Zone have the special features. I own season 1-4 on European DVD too, but when I bought the first 2 seasons and found out they don't have any extra's on it I also decided to buy all DVD boxes on Region 1 DVD since they do have all the extra's. So right now I own season 1-4 on European DVD and season 1-6 on American DVD.