Sarah, following her "three dot" lead, finds a company intent on creating an new AI.  She poses as a wealthy backer in order to get more information.  Meanwhile John wants to trust Riley enough to talk to her but cannot.  Jesse meets with Riley, who appears to be from the future also, and tells her to complete her mission.  Ellison investigates the death of Dr Sherman and talks with the AI that Weaver's company has been developing.