At the beginning, Jayden can be seen writing with his left hand, "Potential Cases" on the whiteboard.
This episode takes place over almost a full day and night (from when ghosts are all lined up outside their building seeking the boys' help, all the way until dawn the next day when Niko finally meets up with the team walking back from the Devlin house), so Niko and Crystal are awake for almost 24 hours.