Quentin tries to talk to Alice about what happened in the classroom when they are drawn away by Eliot and Margo in episode 1x02 "The Source of Magic". Alice and Quentin try to track down Charlie in the fountain in episode 1x03 "Consequences of Advanced Spellcasting". Marina and Julia arrive on campus after the wards go down in episode 1x04 "The World in the Walls". Appears in 5 more episodes.
Julia uses her magic to steal money from an ATM in episode 1x03 "Consequences of Advanced Spellcasting".
The students arrive at the Brakebills campus in Antarctica in episode 1x07 "The Mayakovsky Circumstance".
Where Peter goes to talk to Broyles and then meets Amy Jessup again in episode #201 "A New Day in the Old Town".
Man finds a dead body in the fountain here in episode 3x11 "Reciprocity".
Mel helps organize a protest of Professor Thaine outside the building where his lab is located in pilot episode. Mel and Maggie are given a vision of 1989 to learn what happened to cause Brenda to become a ghost and they spot their mother who is pregnant with Macy in episode 1x06 "Kappa Spirit". Maggie runs into Mel walking with Niko to Tessa's apartment while she is on her way to meet Parker in episode 1x19 "Source Material".