Sherry Henry

Thursday will mark 11 months since Dallas lesbian Lisa Stone’s unsolved disappearance. On Saturday at 9 p.m. Central time, CBS’ 48 Hours Mystery will air an hourlong episode about the case.

The 48 Hours episode, called “The Facebook Detectives,” will focus on Stone’s friends use of the social media site to keep the search for her alive. Watch a promo for the episode below.

The episode also includes an interview with Stone’s former partner, Sherry Henry, who is the only “person of interest” in her disappearance. Dallas police have long believed the then-52-year-old Stone met with foul play, but say they don’t have enough evidence to make an arrest.

Sgt. Eugene Reyes, of DPD’s special investigations unit, told Instant Tea today that he was surprised to hear about Henry’s interview with 48 Hours, given that she hasn’t been talking to other media or cooperating with police.

“We have nothing new, and some of the DNA tests that we were waiting for just didn’t pan out, so we’re back to square one with only one person of interest,” Reyes said. “Everything’s circumstantial. There are plenty of pointed fingers, but it’s not going to be enough to get a conviction. … Some of these cases go on forever and ever.”

Reyes said he hopes the 48 Hours episode leads to a break in the case, but he isn’t counting on it. The show’s producers have told him not to expect any major revelations, and he noted that a billboard advertising a $10,000 reward for information about Stone’s disappearance generated zero tips.

But Stone’s friends remain optimistic.

“We will find answers and justice for Lisa soon!” Tina Wiley declared on her Facebook page today, after announcing that she’s canceled her birthday plans so she can fly to New York this weekend.

Wiley said after the 48 Hours broadcast, she’ll appear on CBS’ Early Show this coming Monday. But first, Wiley will appear on the the Channel 11 News, at 10 o’clock tonight.