The account line read PERSONAL—C.C. and was approved by Constance.

At first Preston thought it might be another attorney’s letter.

The courier’s tracking record instead identified a sealed envelope delivered to the family’s Lake Forest residence.

The receiving signature belonged to Constance’s longtime house manager, Helen Burke.

Helen had retired to Wisconsin two years earlier.

When Martin contacted her through counsel, she agreed to speak voluntarily.

She sounded tired, not evasive.

“I remember the envelope,” she said.