Okay, I am so confused...

that episode was from last year and it was all a set up and ryan was in on it. Horatio is alive it was to help catch a killer.
And in this season finale Calleigh was in a shout out with alot of people and then a car fled the scene which turns out to be eric driving with his dad beside him and so calleigh i think accidently shouts eric. then they find the car with erics dad and he has blood on his shirt but it is not his blood and he says that eric was hurt and lost control of the car then you see footsteps going into the water and the last scene is calleigh walking away crying because she doesnt no if eric is ok or even alive bacause they cant find him.
Hope this helps!