By Marva Hinton, 8/1/08

Another jailhouse call has been released in the Casey Anthony case.

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The latest call between Casey and her brother, Lee, covers a mysterious letter her family wants her to write.

Casey's family has been encouraging her to write down everything she knows about Caylee's disappearance, so they can look over the information and use it to find the missing toddler. But when Lee asked her about it, she had this response.

"Well, when I get a chance to actually write a little bit more, I should be able to do that within the next little bit because I have some, I guess, quote, rec time," said Casey.

The 22-year-old mom's parents met with investigators for several hours Wednesday, and Cindy Anthony says they're close to figuring everything out. But she wouldn't give any specifics.

Three friends were scheduled to visit Casey over the next few days, but she has asked that only her immediate family be allowed to see her, so those visits have been canceled.