Here is a new synopsis, from Syfy's press release:
The diabolical intrigue involving the Alphas team and a secretive group of Red Flag operatives escalates and the team must decide whom to trust on the explosive season finale of Syfy’s super-powered original drama series Alphas, on Monday, September 26, 10PM (ET/PT).
The finale will be preceded by a full-season marathon featuring back-to-back episodes beginning with the pilot episode at 11:30AM (ET/PT).
Several BSG and Caprica actors made an appearance in the show's first season. Callum Rennie guest starred in the pilot and "Anger Management," Peter Wingfield was in "Bill & Gary's Excellent Adventure" and - missed this one the first time around somehow (see photo) - Dmitry Chepovetsky appeared in "A Short Time in Paradise."
11:30 am - Pilot
01:00 pm - Cause and Effect
02:00 pm - Anger Management
03:00 pm - Rosetta
04:00 pm - Never Let Me Go
05:00 pm - Bill and Gary's Excellent Adventure
06:00 pm - Catch and Release
07:00 pm - A Short Time in Paradise
08:00 pm - Blind Spot
09:00 pm - The Unusual Suspects
10:00 pm - Original Sin
^ "Rosetta," "Blind Spot" and "The Unusual Suspects" are essential viewing for the Red Flag story arc.
John Pyper-Ferguson isn't in any of the previews for the Alphas finale, but a new preview of Fringe 4x02 "One Night in October" showed up on YouTube today and, from the looks of it, he will be wreaking inconvenience across the universes this week.