Related Clues:

• With 34-, 36- and 37-Across, ulterior motive ... or a hint to the word concealed in each starred clue's answer
• Went to ground
• Stashed in a secret place
• Got ready for a surprise party
• Didn't divulge
• Found a spot while a seeker counted
• Ducked, maybe
• Played sardines, perhaps
• Got under the bed, say