In Arrow 309 Nyssa returns to Starling City and tells Oliver that her father, Ra’s al Ghul has given Oliver 48 hours to find Sara’s killer…

Check out the preview and Executive Producer Marc Guggenhein’s lowdown above. The episode airs on December 10th, 2014 on the CW network. In the UK the series airs on Sky 1.

The series stars Stephen Amell, Willa Holland, Colton Haynes, David Ramsey, Katie Cassidy, Susanna Thompson, Paul Blackthorne, Brandon Routh, Emily Bett Rickards, and Austin Butler. Guest stars Matt Nable, Katrina Law and Alex Kingston.

Arrow 309 – Official Information

Season 3: “The Climb”

Ra’s al Ghul gives Oliver an ultimatum; Dinah Lance pays Laurel a visit

Nyssa (guest star Katrina Law) returns to Starling City and tells Oliver (Stephen Amell) that her father, Ra’s al Ghul (guest star Matt Nable) has given Oliver 48 hours to find Sara’s killer or the League of Assassins will start killing the citizens of Starling City.

Laurel (Katie Cassidy) is stunned when her father (Paul Blackthorne) delivers a very special Christmas gift – her mother, Dinah (guest star Alex Kingston).

Meanwhile, Ray (Brandon Routh) tries to make amends with Felicity (Emily Bett Rickards) and Oliver sets a meeting with Ra’s al Ghul.

Thor Freudenthal directed the episode written by Jake Coburn & Keto Shimizu (#309). Original airdate 12/10/2014.