Last night I ran a session for my group just heading into the beginning of Dead Stars. They've ended up approaching it from a but of a random angle but I won't go into that. This session I finally revealed their Inquisitor to them, previously they have been handled by three throne agents who wouldn't reveal the identity of their master. I had decided that their Inquisitor is actually dead but passed on responsibility to his throne agents to continue his work (leading towards the PCs in Ascension) but that he had the ability as a member of the Ordo Chronos to travel forward to advise/direct some cells at crucial moments to ensure his work goes well. This he did appearing to them to give them a little bit of crucial info and to impress upon them that their work was really important to his plans.
One of my PCs has taken as a madness pure paranoia that large protions of the Inquisition are out to get them or are working against them after getting quite frustrated by all the secrecy and schemes they glimpse as part of the Haarlock Trilogy and this twist really seemed to hit home. So much so that she was actually rendered speechless for a few minutes (her own words I just thought her character was actually angry!). This was really enjoyable for me and so I wondered - anyone want to share stories of twists/sessions/events in their games that went really well?
I'd love to hear about them if you did - let's celebrate some times that people enjoyed!