Sawyer perpetuates a lie with some of the other island survivors in order to protect themselves from mistakes of the past
Guest starring are Nestor Carbonell as Richard Alpert, Doug Hutchison as Horace Goodspeed, Reiko Aylesworth as Amy, Christopher Jaymes as doctor, Kevin Rankin as Jerry, Patrick Fischler as Phil, Molly McGivern as Rosie, Carla Buscaglia as Heather and John Skinner as Other #1.
This appears to be a Sawyer-centric episode and it seems like the majority of the episode will cover what happened to our time-hopping Island friends, Sawyer, Miles, Daniel, Jin and Juliet after Locke "fixed" the Frozen Donkey Wheel and left the Island. And judging by the promos, it looks like Locke tyically botched the fix; he was able to stop the time jumps but he left his friends stuck in a past time that looks suspiciously like it might be sometime in the 1970's when the hippy-dippy Dharma Initiative was in control of most of the Island. And the presense of Horace Goodspeed, last scene as a bloody nosed ghost at the Purge mass grave site giving Locke a pep talk, seems to give creedance to this theory, along with episode photos featuring Sawyer in a Dharma jumpsuit and a new character Amy, (Reiko Aylesworth, around for at least 4 episodes)wearing some very hippy-dippy maternity clothes...(uh, how can she be giving birth on the Island; don't the mothers always die? Or, is that a recent thing affecting the Others?)
Lost takes a vacation next week, (no new episode) and returns in two weeks with Namaste, which is rumored to be Ben-centric mainly because the ABC officially announced cast list (which means technically that this is NOT a spoiler)includes Sterling Beaumon who played young Ben in the Season 3 episode, The Man Behind the Curtain, as well as appearances from Christian Shephard and Dr Marvin Candle...)
Here are the titles for the rest of the season, except for the season finale, (Episodes 16/17).
Episode 5.9 - Namaste: Ben-centric featuring those named above plus newbies Ilana and Caesar and Frank Lapidus...
Episode 5.10 - He's Our You: Sayid-centric, with scenes set in Russia and rumored to explain why Sayid agreed to come back to Island. Also, rumored to include scenes with a young Sayid, which seems to be a theme this season...
Episode 5.11 - Whatever Happened, Happened: rumored Kate-centric, specifically why did she come back to the Island and what happened to Aaron. Rumored to include Claire's mom, (and I'm GUESSING that maybe another ghostly visit from Claire MIGHT be in the offering; this is NOT a spoiler, only my own theory/guess!)
Episode 5.12 - Dead is Dead: unknown. Rumored to include a car crash scene set in Long Beach and believed to center around the survivors of the Ajira plane on Hydra Island.
Episode 5.13 - Some Like It Hoth: rumored to be Miles-centric including a scene with a young Miles.
Episode 5.14 - The Variable: rumored to be a followup to last season's The Constant and heavily featuring Desmond and Daniel including scenes with Daniel and his mother and more Oxford flashbacks.
Episode 5.15 - Follow The Leader: unknown/currently filming