Summer Glau, best known by geeks like me as River Tam in Firefly, will be joining Arrow in it’s second season. In a recurring role, Glau will play Isabel Rochev, a the Vice President of Acquisitions at a company that is looking to take over Queen Consolidated. Fans of the original Green Arrow comics will recognize Rochev as a dangerous woman with connections to Oliver Queen’s father. Watch for Glau in the season 2 premiere.