"18"^^ . . . . "4"^^ . "In a Mirror, Darkly"@en . . "2005-04-29Z"^^ . . "\"In a Mirror, Darkly\" is the eighteenth and nineteenth episodes of the fourth season of the American science fiction television series Star Trek: Enterprise, and originally aired on April 22 and 29, 2005. This installment was developed to be a sequel to The Original Series episode \"The Tholian Web\" and a prequel to \"Mirror, Mirror\". The decision to set an Enterprise episode in the mirror universe originated with a pitch to enable William Shatner to appear in the series."@en . . . "2005-04-22Z"^^ . . . . . .