News 8 investigated the listings on Zahau's cell phone logs within 48 hours of her death and found phone numbers linked to the following individuals:
- Jonah Shacknai, boyfriend
- Mary Zahau-Loehner, Rebecca's sister
- Adam Shacknai, Jonah's brother
- Dr. Howard Luber, Jonah's friend
- Gideon & Marcelle Shacknai, Jonah's father & step-mother
- Xena Zahau, Rebecca's sister
- Nina Romano, Jonah's ex sister-in-law
- Det. Thomas Adkins, Coronado Police
- Snowem Horwath, Rebecca's sister
- Caroline Niles, Coronado, Calif.
- Valerie Flores, Medicis employee
- Coronado Bay Urgent Care (treated Xena Zahau for leg injury)
- Camp Diggity Dogs, dog daycare facility