6 burning questions for 'Making a Murderer' season 2

During the trial and in the wake of the success of "Making a Murderer," several possible alternate suspects in the Halbach murder have been discussed in the media and fan forums. They've included Avery family members, Halbach's ex-boyfriend, and even a notorious killer known for pinning his murders on others.

In March, Zellner said she was close to identifying alternate suspects among key people who knew the victim. Currently, Zellner says that she has a very good lead on an alternate suspect. Will that pan out?

Since choosing to represent Avery, Zellner has been using new tests on the alleged crime scene and the evidence in the case. She hasn't established whether earlier tests have come up with anything that will help Avery's case and recently told the New York Times that she's embarking on more, with results coming back within 60 days.

Nonetheless, she still feels fairly certain her defense team will come up with something.

“It may not all be successful, but I believe if even one bit of evidence is planted, the conviction is going to be vacated,” she told the newspaper.

Will any of the tests prove that evidence was planted, as many "Making a Murderer" fans suspect, or is she bluffing?

Zellner has paid close attention to the victim's cell-phone activity.

In Halbach's phone records, Zellner discovered that the victim had made two calls a couple of days before she was killed to a man with a record of sexual-abuse crimes in Arizona.

Zellner found something else in the phone records that she thought was her biggest proof of Avery's innocence. Judging by the location of her last call based on cell-tower data, Halbach had left the Avery auto yard, and Avery's phone records show that he didn't leave the property, according to the lawyer.

Zellner faults Avery's previous legal team, Jerry Buting and Dean Strang, for not using this information during his trial.

"Making a Murderer" also made stars of Avery's defense attorneys in his original trial for the Halbach murder, Dean Strang and Jerry Buting. They have both stayed very active in discussing the case after the series premiered and have teased their return to help Avery.

Zellner, though, seems like a lone wolf. She has also been openly critical of Strang and Buting's defense of Avery.

It remains to be seen if they can play a role in Avery's case going forward.

From the outside looking in, the popularity of "Making a Murderer" must have surely helped Avery's case, right?

From telling his story to creating a mass movement trying to free him and the ongoing fan investigation of the evidence, Avery must have come out on top.

But the story may be different from the inside looking out. Has the popularity of the series actually hindered the case and further investigations? Have the many new theories about evidence and other suspects actually pulled resources away from more solid leads?

Will we find that the dedicated amateur sleuths actually found things Zellner, Avery's previous attorneys, and investigators overlooked? And will those findings come to Avery's aid, or incriminate him?

Of course, these are all the things that make us look forward to season two of "Making a Murderer."