Sarah Michelle Gellar is set to return to television playing twins in 'Ringer'.

The 'Buffy The Vampire Slayer' star will play Bridget, whose identical Twin Sister Siobhan has gone missing.

After Bridget witnesses a murder she must assume the life of wealthy Siobhan, whom she is estranged from.

As she goes through life pretending to be her sister, Bridget realises that she is in just as much danger, as more and more secrets are unearthed about Siobhan.

Launched by the CW Network, the drama also stars 'Fantastic Four' actor Ioan Gruffudd.

The network has also revealed that it is releasing another programme called 'Hart of Dixie' starring 'The O.C' star Rachel Bilson playing a New Yorker practicing medicine in a small southern town.

Rachel will also soon be in appearing in comedy movie 'L!fe Happens' - which tells the tale of two friends who struggle to maintain a normal relationship when one has a child - alongside Krysten Ritter and Kate Bosworth.