Marvel has been releasing remembrance videos for some of the original cast of Marvel's Agents of SHIELD in advance of the two-hour season finale. A few episodes ago, Daisy Johnson touched an Inhuman that showed people the future. In it she saw one of the team dead and floating in a ship in space. She has been terrified of that event happening. The producers tell us that one of the team will die and the adds make it seem like it's going to be one of the original crew: Daisy, Phil Coulson, Melinda May, Leo Fitz or Jemma Simmons.
They could do a bait and switch and have it be Hive killed, which would end the life of Grant Ward. But I think that would be a bit of a cop out. Usually they kill the happy people so I'm looking at Fitz and Simmons.
So far the video released are for Coulson, May, Johnson and Simmons.
The two-hour season finale (2 episodes put together) will air May 17th on ABC.