It's hard to believe for Anna Ysasaga-Cuevas that one year has passed since her son was last seen leaving a friend's house on the morning of June 14, 2012.
"It just seems like it was yesterday when it happened," she said. "Today was the last day I saw him one year ago and I can't remember his voice anymore. That's all I want to hear is his voice."
Friends told police they last saw Ysasaga leaving a home in the 3100 block of 27th street early on the morning of June 14. A surveillance video obtained from the Wal Mart on 4th and Avenue Q shows Mark leaving the store with his friends around 6 or 7 a.m. but after that, the trail goes cold.
"We had some tips, we obviously follow up on all of our tips and they haven't turned up anything for us. All of the leads we followed have not shown us anything promising so that's why we're trying to get the word out again," said Sgt. Jason Lewis with the Lubbock Police Department.
"It's just one of those things that as time passes you start to lose hope. It's really unfortunate so we would like some closure," he said.
The past year has been busy for Ysasaga-Cuevas, as she has tried to do whatever she can to locate her son.
"We've done bake sales, car washes, we've been in all the parades here in town, we even went all the way to Abilene because we had a sighting over there," she said.
"This one year has been really hard not knowing where he's at or if he's okay or even if he's still alive out there somewhere."
The hardest day of what Ysasaga-Cuevas described as a roller coaster year was Mark's birthday. He would have been 16 years old tomorrow and she said he was looking forward to a party and learning how to drive. Instead, all she has now are memories.
"I go to his room and just look at some of the stuff that he's done or I have a picture that sits next to my TV so while I'm watching he's right there looking back at me," she said.
And she already has plans in the works to help her find Mark.
"We're going to get out there and go to every single neighborhood and pass out the flyers again. I ordered 10,000 yesterday so we should have 10,000 flyers on hand tomorrow to get started all over again, going door to door."
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