“The Secret Garden,” a musical interpretation of Frances Hodgson Burnett’s novel, begins its second and final weekend run this evening at 8 p.m. The student production is directed by NU theatre department chair Rives Collins and will be held in Cahn Auditorium. Other show times are Friday at 8 p.m., Saturday at 2 p.m.and 8 p.m and Sunday at 2 p.m.