Couple Renovating Their House Makes A Startling Discovery That Was Buried Right Under Them For Years

A Map

The last card had a map of Arizona on it. It had marked a few points on the map, which mentioned Phoenix, Mesa, and Tucson. Now they know they found this safe in Phoenix, does that mean the other safe is in Mesa? Because Mesa was marked with an X. Is that where the house is? The one with the three trunks tree? Eddie had so many questions in his mind.