Official synopses for Legends Of Tomorrow episdes #5 and #6. Spoilers!
Grainne was a history teacher at the local highschool and he was staying late to grade papers, once again. He didn't like to take his work home with him and have his house all cluttered up. He let out a sigh and looked up to see that his across the hall neighbor in the school was also staying by late. He chuckled a bit and stood, stretching before heading out to her room. "Hey Cheyenne." He smiled. "Late nigh' for ye tae, huh?"