Here's a short story:

(CNN) -- An Arizona couple who wanted to adopt a woman's baby know more than they're saying about the 8-month-old boy's disappearance, police say. 

Gabriel Johnson hasn't been seen since December 26, police said, and his mother was arrested last week in Miami Beach, Florida, after not reporting for a December 28 child custody hearing in Arizona. 

"We have some good indications at this point with our investigation that Tammi and Jack Smith do know more information than they have provided to us that could possibly lead us to Gabriel," Sgt. Steve Carbajal, spokesman for the Tempe (Arizona) Police Department, told HLN's Nancy Grace on Thursday. 

For their part, the Smiths told HLN's Jean Casarez on "Nancy Grace" that they voluntarily took polygraph tests Friday at the Tempe Police Department. 

"The polygraph test is not like what you see on TV," Jack Smith said. "It's almost like being strapped into the electric chair, so it's very intensive. And we were very happy to do it." 

The Smiths have said they met Elizabeth Johnson, 23, seven months ago during a long layover at an airport, and later the three discussed a plan to adopt Johnson's child, Gabriel. 

But the boy's father, Logan McQueary, has legal custody and has said Elizabeth Johnson urged him to sign papers giving the Smiths custody of the boy, but he refused. 

"She didn't want Logan to have the baby, and we couldn't adopt the baby because Logan wouldn't sign the papers," Tammi Smith said on "Nancy Grace."  (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: What did the AZ couple want to do?
Guess: adopt a baby
Confidence: <appropriate level of confidence in this guess>

Question: how old?
Guess: 8 months
Confidence: <appropriate level of confidence in this guess>

Question: what happened?
Guess: the baby disappeared
Confidence: <appropriate level of confidence in this guess>

Question: name of baby?
Guess: Gabriel Johnson
Confidence: <appropriate level of confidence in this guess>

Question: date last seen?
Guess: December 26
Confidence: <appropriate level of confidence in this guess>

Question: Moms name?
Guess: Elizabeth Johnson,
Confidence: <appropriate level of confidence in this guess>

Question: age?
Guess: 23
Confidence: <appropriate level of confidence in this guess>

Question: Where was mom arrested?
Guess: Miami Beach, Florida,
Confidence: <appropriate level of confidence in this guess>

Question: when was court date?
Guess: December 28
Confidence: <appropriate level of confidence in this guess>

Question: who is steve carbajal?
Guess: Tempe police sargeant
Confidence: <appropriate level of confidence in this guess>

Question: Did they go on TV?
Guess: yes
Confidence: <appropriate level of confidence in this guess>

Question: What station?
Guess: HLN
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: What show?

Nancy Grace