A lot of things lie ahead for science fiction series Orphan Black and heading into the season finale, capped by the revelation of who the LEDA mole really is.

That and of course a lot of other developments which involve the other characters in the series.

Among them include the expected return of Mark (Ari Millen) who will make his return in episode 9. Since the explosion that occurred at Castor, it has yet to be determined on what happened to him. His return sparks a lot of questions, particularly on what happened to him and fans will be curious as well to find out just what he could possibly be now up to.

Cosima (Tatiana Maslany) and Scott (Josh Vokey) are out of jobs and will be spending a lot of free time together. So with plenty of time for each other, what would the two burn their time with?

Delphine (Evenly Brochu) is expected to share a scary experience with Shay (Ksenia Solo), something much awaited. It remains to be seen what scary revelation that was and if it was indeed meant to intimidate Shay. Has Delphine's personality really changed or will this affirm that there was none to begin with?

It will be recalled that Donnie and Jason had fight last time out when the former caught the latter kissing his wife, Allison. That incident may have a serious bearing on the future of the couple's (Donnie and Allison) drug business. Helena (Allison in disguise) could be sent to patch things up with Jason.

Lastly, the LEDA mole will be revealed and she is a female. With the gender out of the way, it now remains to see who among the female characters it could be. Shay? Delphine? Rachel? Or someone that viewers least expect?

All this and more are in store for Orphan Black viewers this coming Saturday in the episode "Insolvent Phantom of Tomorrow". Don't forget to tune into BBC America and Space at 9:00 p.m. ET.