All predictable. The only reason I give this a 5 is because they played the crooks in a creative way. All hostage taking episodes should end with sniper bullets, preferably in the first 5 minutes. Every show that ever existed - even sitcoms - seems to do a hostage episode. A crime show in its 17th season is probably up to at least 17, I'm not counting.
Among hostage episodes of all flavors, this ranks about in the middle. I don't know if I have a favorite. The old Mannix episode "Sunburst" is actually one of the first I ever saw and has some interesting twists, especially when it came to the hostages themselves.
The old "Save my buddy" at gunpoint trope is worn out. I'd love to see a doctor, paramedic, or someone thought to be, just give the guy some massive pain. We've all seen the scenario a hundred times and imagined what we'd do. I'd do something off the wall if I had the chance.