Hmm.
There was the time when it came time to merge the two games I was running simultaneously into a single game, because I and my one player were coming home from college to where I had been playing in my off hours with another group.
My solo player and I ran 2 characters each on a 4-person covert ops vessel.
She played the Commander and the CMO.
I played the engineer and the security specialist.
The sticky point: I was running the SAME 2 NPC's in the other game as well. And I wasn't about to run 4 characters, so 2 had to go.
So I arranged for the covert vessel to be stealthily witnessing the test of a Romulan "tranwarp drive," which failed in a spectacular and destructive fashion, dragging itself and the character's ship towards and into a singularity.
There were fore and aft escape modules. The Captain and Security got the injured CMO into the forward pod. The captain ordered Security to stay with the pod while she went to find the engineer. He refused. The friends shared a long (dramatically) moment while he reminded her of his tendency to be able to survive in the worst situations (this was old FASA stats, he had a LUC 0f 103.). And she let him put her in the escape pod and launch it.
And then she watched as a chunk of debris hit the ship and destroyed it, and her ship was sucked through the singularity.
And I had to end the session because she was sobbing, and I was about to.
Of course, at the beginning of the next session she woke up to find both those characters alive and well and serving on another vessel. And they'd never heard of her. And when she figured out what had happened, she wanted to strangle me. It was great fun.
"It's hard being an evil genius when everybody else is so stupid" -- Quantum Crook