Here's a short story:

Chapter III 

WHO WAS IT? 

Who had taken it? This question tormented Treherne all that sleepless night. He suspected three persons, for only these had approached the fire after the note was hidden. He had kept his eye on it, he thought, till the stir of breaking up. In that moment it must have been removed by the major, Frank Annon, or my lady; Sir Jasper was out of the question, for he never touched an ornament in the drawing room since he had awkwardly demolished a whole _étagère_ of costly trifles, to his mother's and sister's great grief. The major evidently suspected something, Annon was jealous, and my lady would be glad of a pretext to remove her daughter from his reach. Trusting to his skill in reading faces, he waited impatiently for morning, resolving to say nothing to anyone but Mrs. Snowdon, and from her merely to inquire what the note contained. 

Treherne usually was invisible till lunch, often till dinner; therefore, fearing to excite suspicion by unwonted activity, he did not appear till noon. The mailbag had just been opened, and everyone was busy over their letters, but all looked up to exchange a word with the newcomer, and Octavia impulsively turned to meet him, then checked herself and hid her suddenly crimsoned face behind a newspaper. Treherne's eye took in everything, and saw at once in the unusually late arrival of the mail a pretext for discovering the pilferer of the note. 

"All have letters but me, yet I expected one last night. Major, have you got it among yours?" And as he spoke, Treherne fixed his penetrating eyes full on the person he addressed.  (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!>

Question: How many were suspected in the theft?

three persons