Tony's back, Fornell's in the hospital with gunshot wounds and the Jacob Scott case has a new twist, on NCIS Season 13 Episode 23.
It began with Fornell being rushed to the hospital with three gunshot wounds, and Tony arriving home from Russia without having caught Scott.
We learned that the rogue assassin was actually Trent Kort, and that Jacob Scott had not only been framed for the murders, but also for the intelligence leak back in 2002, during which his wife was killed.
This explains why we never actually saw Scott shoot Fornell or Jessica Terdei. I mean, why keep the shooter in the shadows when we've already seen Scott earlier in NCIS Season 13 Episode 22?