That ER episode you mentioned a while back with Ames being at Abbie and Luka's flat.I'm watching that at the moment on BT Vision,they have Series 13 on it.
Well, Ames made Abbie call Luka to come home and then led him to the car by Gunpoint,they drove to Ames Ex Wifes apartment,and watched her and her new DP,with Ames telling Luka how it felt to be dumped etc.
Then they go to a deserted building where he "Tortures" Luka by putting his fingers in a Vice and then Ames kicks the lever to tighten it,he then wants him to describe his pain,and he pleads with him that he needs his hands to work as a Doctor,and provide for his family,he'd be worthless without them,Ames is then a little satisfied by this as its how he feels.
The Police get a report and drive over to the building,Abbie goes too.Ames and Luka are on the Rooftop,he finally gets Luka to admit he "missed" the signs of his Mini Stroke,and he could have prevented it.
Finally he cries lifts the gun and aims at Luka......
We hear Gunshots,The SWAT team rush in and Abbie tries to go too,then We see Luka being led down safe and sound. HTH