Person of Interest 4.21 – “Asylum”

A tale of two numbers, though it should probably be three or four. Team Machine splits up to deal with the two main threads of the season, gang boss’ Elias and Dominic, plus the ever-present A.I., Samaritan. Who will survive to the end of the finale? And just to make it extra special, Control returns to throw a monkey wrench in someone’s plans