Jeri Ryan will guest star in the October 14 episode of Arrow, 4.02 The Candidate. Below is the episode synopsis by The CW:
JERI RYAN GUEST STARS; INTRODUCING ECHO KELLUM — When an old family friend, Jessica Danforth (guest star Jeri Ryan), tells Oliver (Stephen Amell) and Thea (Willa Holland) that she is going to run for mayor, both Queens are concerned considering the last three mayors have been murdered. Despite their protests, Jessica makes her announcement so the Green Arrow and Speedy vow to protect her. Meanwhile, Thea begins to exhibit effects from the Lazarus Pit. In addition, Felicity (Emily Bett Rickards) is faced with a tough business decision and looks to one of her employees, Curtis Holt (guest star Echo Kellum), for help.