Spy Camera?

How can I be 100% sure my landlord didn’t put a spy camera in my apartment; I have 6 electric IP that all are accounted for but only 1 isn’t; it says Generic, and World Wide Web ..... I don’t even have this co. ....I found a fire stick extender on back of TV I know I didn’t buy...
and 2 extenders were connected back-back..... I would never do that,
  my cell seems to work fine ...... I can’t sleep or eat .....someone please help me..... thanks