Coded message
Charlotte’s friend showed her the hidden message behind the top paint layer as soon as she arrived at the workshop. Charlotte was able to decode the message, which was written in coded language. In her husband’s writing, she found an address. She was certain that the address was only written in her husband’s handwriting.
There was also another code mentioned next to the address. This code was to be cracked and, most importantly, decoded only by Charlotte because she understands the value of it.