Related Clues:

• Friendly hint
• Not late round at friend
• Close friend's hint
• Hint eventually about empty account
• Eventually, grabbing at bosom
• Sharing a close and affectionate friendship
• Imply that it's private
• Tell one's friend
• Suggest that prisoner takes it back
• Suggest it's very personal
• Imply that he's a bosom pal
• Let it be known though it is confidential
• Familiar hint
• State secret
• Suggest prisoner swallow note