ORLANDO, Fla. -- The parents of a missing Orlando woman appeared on national television Wednesday morning asking people across the country to help them find their daughter. Jennifer Kesse, 24, disappeared more than two weeks ago.

Jennifer's family is at her condo Wednesday, taking a much needed break after two weeks of constant searching. Thursday they're planning to launch another massive search hoping for volunteers to get the word out about the person of interest.

Surveillance pictures of a man walking in the condo complex where Jennifer's car was found are the best lead so far. Police have been searching surveillance tape from businesses in the area hoping for a clearer image of that person of interest.

Crime scene technicians have been working to calculate his height and other information about him. Tuesday, a cadaver dog searched the rooms at an abandoned Orlando resort but found nothing.

Police confirmed Wednesday that they have used polygraph tests in the Kesse case, although they will not disclose how many or who took them.

"It is an investigative tool to move forward sometimes in a particular direction and it was confirmed to me we did utilize that," said Barbara Jones, Orlando Police Department.

The Kesses told Channel 9 that none of the immediate family had been tested, but they're all willing to.

Wednesday morning, Jennifer's family made the rounds on all of the television networks, expanding their search nationwide. They've also been on several national talk shows trying to get the word out.

"Jennifer, we know and you can feel that your mom, dad and brother, that we are coming for you. We are doing everything possible and you just hang in there. You're a smart girl, you know what to do, you know we will come for you, you know we will find you," Jennifer's father, Drew, said on Good Morning America.

Jennifer's family is still holding out hope that the 24-year-old is alive, since massive searches through wooded areas within five miles of her condo and car have turned up nothing.

They're planning another big search effort this weekend. They're hoping the 1,200 volunteers from last weekend will return. They said they won't stop until they find Jennifer.