The dead superhero in question is the Midnight Ranger.

The problem is, theres no I.D.

on the body and nobody knows the true identity of the Midnight Ranger.

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Credit: Michael Parmelee/CBS

when she gets a bit of a suspicious donation.

It doesnt come in the form of clothing, but rather in money, and lots of it.

She hears that Morland Holmes has donated $250,000 to the cause.

As usual, such a good deed doesnt come without a favor in return.

Morland is basically the mafia and its fine, totally fine.

He wants Joan to look into the matter, but shes not so sure about it.

Thus, Sherlock comes across The Standard Bearer, another DIY hero of the city.

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As it turns out though, they didnt even need The Standard Bearer.

Baxter insists he has a good explanation though.

Then, he started sending him money to buy things, like body armor, to keep him safe.

Two things lead the detectives away from Baxter after that.

Sherlock tracks down The Standard Bearer, whos real name is Ben, rather easily, and questions him.

He thinks that Ben perhaps killed Mike for take over as Midnight Ranger, his favorite superhero.

Looking through that phone ends up breaking the case open.

The only incoming call on Mikes phone is from a sergeants desk within the NYPD.

Mr. Baxter, the Midnight Ranger comics editor.

A continuous drunk, Mr. Baxter decided he was going to massacre the whole office.

Armed to the teeth, he was stopped by Mike.

Joan doesnt want to rat him out though.

Rather, she wants to use him to get more information.

She wants him to continue to be a mole.