I finally watched all of 1st two episodes last night. I need to pull out my kdrama notebook (collecting dust for last 6 months) and re-watch for clues. I love a challenge.
Pure speculation: Kwon Yu Ri (a favorite of mine) is Jun Ho's wife.
Possibly still alive, but I'm guessing at a minimum that something happened (just WHO is the DECEASED who was somehow involved in The Plan???) and it has something to do w/the pharmaceutical company that is "part of the plan".
As for the other executives w/in Sabin, there will be multiple knives-in-the-back until the final 2 episodes. I always enjoy watching Oh Man Seok (Executive Lee), so I hope he's a good guy. Chairman is apparently being uber-medicalized (the pharma company???) and will eventually become a crisis.
Pure speculation - can't wait to see how it all unfolds.