You are right about Wat Chanathikaram. However, my recollection is that the actual CBS telecast subscript said "Wat Chalong". Perhaps a reason for that is revealed in the Wikipedia entry for episode 5:
Chalong, Mueang Phuket District, Phuket Province (Wat Chanathikaram) >Roadblock (Reassemble the spirit house)<
Chalong is the area of Phuket where Wat Chanathikaram is found.