Complex sentence: Over separate nights, they awake to find the backdoor open, the contents of the refrigerator ransacked, all of their canned foods stacked in towers and the house alarm is set off when it detects that all entry points were breached at the same time.
Split into simpler sentences: Over separate nights, they awake to find the backdoor open, the contents of the refrigerator ransacked, all of their canned foods stacked in towers. The house alarm is set off when it detects that all entry points were breached at the same time.