CENTRAL FLORIDA -- Caylee Anthony doesn't have a twin, but a second little girl named Kaylee looks a lot like her and investigators thought so, too. They secretly swarmed a family home in Central Florida about an hour's drive from where the Anthonys live.

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Deputies said they were checking out an anonymous tip and they said the only way to get to the bottom of it was to go to the house in question. It turns out they found Kaylee, but not the one everyone is looking for.

It was the striking similarity between missing Caylee and this Kaylee that brought deputies to the home of Wayne and Kim Tupper in the middle of the night in mid-August.

"They all filed in. There was about five deputies and then they asked if they could see my daughter," Wayne Tupper told Eyewitness News.

That's when they got the real surprise.

"So, I'm waking her up, 'Kay-kay, wake up.' And then the last thing I said was 'Kaylee,'" Wayne said.

The Tuppers needed family photos and a birth certificate to prove she isn't the little girl who's been missing for so long.

"We don't know if somebody saw us at a store, if they were driving by," Kim said. "Could you imagine if I was at a store one day and somebody thought it was her and they didn't let me leave?"

But the Tuppers said they're most frustrated by the Anthonys' accusations that authorities aren't looking for Caylee. She says their experience proves otherwise.

"If it was our daughter, I would expect them to do the same, but they are doing their jobs," Kim said.

Even in his report, a deputy wrote that the girl looked a lot like the missing child. Of course, there are some differences. Kaylee is a little older and spells her name with a "K."