After an action-packed premiere of season 4, "Arrow" returns on The CW with another intense episode this Wednesday, 14 October. The sequel will not just feature "Star Trek" actress Jeri Ryan as an old family friend of the Queens but also Canadian actor Alexander Calvert as "Batman" villain Lonnie Machin aka Anarky.

While Ryan's character enters the supernatural series with a new challenge for the Queen siblings, Calvert's character will be introduced as a "deranged freelancing criminal who is willing to do whatever it takes to impress a potential employer" in episode 2, titled "The Candidate", according to Comic Book Resources.

As both the characters bring new problems for the vigilantes of the Star city, the team will have to prioritise their responsibilities and find a way out to save the city from the new villain Damien Darhk (Neal McDonough).

The followers of the supernatural series can also expect to get more details on the demise of a major character shown towards the end of the first episode through a flash-forward sequence.

CLICK HERE to watch "Arrow" season 4 episode 2, titled "The Candidate", live online on The CW at 8pm on Wednesday, 14 October.

The official synopsis of the fourth episode read as follows:

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.