Accused in-law killer, Marisol Best, may have described killings in writing

TAMPA (FOX 13) - A woman accused of praying with her in-laws before killing them may have documented the killings while she was in jail. Now, prosecutors say Marisol Best's former cellmate told investigators the evidence was in writings hidden in their living quarters.

A search warrant dated May 25 shows investigators went through Best's jail cell after a former cellmate, Lisa Maley, started talking.

Investigators say Maley told them Best admitted in conversation that she killed Virgil and Shirley Best and that she was writing a story about the murders in a book that was stashed in her cell.

Records show investigators then did a search, finding a grey box with miscellaneous contents. The documents did not specify if Best's own writing was found.

Best has qualified previous statements by saying she blacked out during the time of the killings. 

She said her relationship with her in-laws was strained over their supposed lack of support for their son, Robert, who was facing charges of sex with a minor. 

Now, whatever is in the little grey box may provide more answers.

Several weeks ago, prosecutors said they would not be seeking the death penalty. The trial is slated to begin the second week of July.