**Misfortune comes in threes** 

See the [Phychology Today blog][1]

Or [English.SE][2]


  [1]: https://www.psychologytoday.com/us/blog/time-out/201310/misfortune-comes-in-threes
  [2]: https://english.stackexchange.com/questions/299868/death-comes-in-threes-origin