The Wild Wild West

The Night of the Winged Terror (1) (4x15)

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After a series of disturbing incidents involving a raven that seems to hynoptize high-ranking officials into committing dastardly deeds, Agents West and Harper decide to find out what's going on. The incidents lead the new partners to a group calling themselves "The Raven", led by Thaddeus Toombs and a man called Tycho.