At the end of the episode, Foggy places a call to 911, but hangs up after a few rings. Even if the call could get to that many rings before being answered, a 911 hang-up is called an abandoned call, and 911 services immediately follow up on these by either dispatching an officer to the location (if available) or by calling the number back. Because he is calling from a cell phone we can assume that the 911 system was not able to determine the address, but Foggy's phone doesn't ring afterward from the call-back. Abandoned calls could be domestic violence incidents or situations where the perpetrator has forced the caller to hang up.
At the beginning of the episode, the priest pours sugar in Murdock's cup. He pours nothing - nothing comes out of the container.
Somehow Daredevil is able to see the logo on the heroin packet.
Outside the church, the priest says to Matt, "I'll be inside, [if] you want to take confession." Taking confessions is the priest's job; he presumably means "if you want to confess."