Mirror, Mirror II - Season 1 Episode 1 Arrival

The mirror appears in an attic in the country. Daniel is on his way to met his father, step-brother Fergus and half-sister Mandy for the first time. The reception that he receieves is less than welcoming. After Mandy gets upsets and runs to the attic, Daniel follows her, in the reflection of the mirror he sees a girl. Mandy gets in the way and they inadvertantly go through to the year 1867. They get back only, later on, for Mandy and Lily become trapped and they spend the night in the du Lutrelle barn before the mirror is knocked back into alignment.