When things go missing, Brittany blames her husband-she doesn't know a stranger living inside their home plans to use the couple in medical experiments. When Madisyn's clothes disappear, friends tease that it's all in her mind.

Tina believes her dead mother is playing tricks on the family until a battle with a flesh-and-blood intruder uncovers a real-life horror movie. Amber feels uneasy in her new apartment.

Stacy blames the kids when family gifts go missing, but a dirty footprint leads her to a shocking surprise. College students Brett and Mark hear eerie sounds and find their kitchen trashed before stumbling across a roommate they never knew they had.

Vickie's ex has invaded her home and turned her life into a living hell-until she decides to turn the tables on her tormentor. Paul investigates strange noises and discovers a meth lab under construction beneath his house.

Engaged couple Timothy and Amanda find uninvited guests in their crawlspace-a man wearing Amanda's clothes and a cat eating their food. Presley hears creepy noises and lets out a blood-curdling scream that sends her mother and father running.

When odd noises fill Courtney's home, her exes offer to help. As things become more chaotic, she's blind to what's happening around her. Davis reports a woman jogging out of his house. When the cops leave, he gets another surprise-a bonus phrogger.

A raised toilet seat alerts Kate to an uninvited male visitor. When Samuel finds blood and muddy footprints, he and his father team up to track down a looming phrogger.

Helena notices things missing or misplaced but figures it's a memory lapse. It takes an encounter with her home invader to make her finally wake up. Brian's Seattle condo turns into a war zone when he looks under his bed and finds a phrogger with a knife.

Sherry blames her grandchildren for hoarding food until she comes face-to-face with the real culprit-a man from her past hiding in her crawlspace. Paul returns from overseas to find four phroggers on his balcony, triggering a traumatic memory.

After Heidi moves to the big city, her underwear starts disappearing. When Jordan can't find her purse, her boyfriend checks security footage and they see a phrogger creeping toward them as they sleep.