Inspired by repairs to Zola’s butterfly costume, Derek collaborates with Ben Warren on a new surgical technique for his brain-mapping research.
Professional tension between the two remains high as Meredith retaliates against Cristina's previous jabs by not inviting her to a Halloween event. Watch www xrysois se Greys Anatomy S10E07
Richard angers Bailey by requesting a second-year resident perform his next surgery instead of her. Inspired by repairs to Zola’s butterfly costume, Derek