If I remember right Fisk sends Matt to prison and tries to have Foggy killed in a riot. This is the last straw for Matt who has a full on mental break down. By this time Frank has heard of Daredevil getting arrested and sent to Ryker's. He breaks a pimp's neck in front of a bunch of cops and ensures he joins Matt in prison, because he is worried about Matt and wants to break him out. Yes. Frank Castle motherhens Matt Murdock in prison.
Re: Matt/Frank - Frank treats Matt differently than everyone else
If I remember right Fisk sends Matt to prison and tries to have Foggy killed in a riot. This is the last straw for Matt who has a full on mental break down. By this time Frank has heard of Daredevil getting arrested and sent to Ryker's. He breaks a pimp's neck in front of a bunch of cops and ensures he joins Matt in prison, because he is worried about Matt and wants to break him out. Yes. Frank Castle motherhens Matt Murdock in prison.