Dizi Adı: Fringe
Bölüm Adı: White Tulip
Sezon/Bölüm: 2. Sezon 18. Bölüm
Yayın Tarihi: 15 Nis. 2010

When the passengers on a commuter train all die instantly of massive power loss, the team realizes that a time traveler is responsible… and that it may be impossible to apprehend him. Meanwhile, Walter writes a letter to Peter explaining his origins.