Did this remind anyone of "Saw"? *SPOILERS*
An old man with terminal cancer becomes a cerebral vigilante, rounding up a group of sinners and playing them off with twisted mind games before their untimely demise.
OK, granted there are big differences in that ATTWN's victims were murderers whereby not all of Saw's victims were, and that Saw's victims at least had a chance to save themselves. But the premise is still essentially the same.
Charles Dance even looks and acts uncannily like Jigsaw with his cold-blooded, emotionless view to his rationale of meting out justice!