This 犯罪现场调查 screencap contains
商务套装 and 西装.
There might also be
旋转门, 左轮手枪, 街道, 城市风貌, 城市环境, 城市场景, 城市设置, 精心打扮的人, 西装, 裤套装, 裤装, 穿着好衣服的人, 裤子套装, 穿得好的人, and 套装.
Jack picks up on the vibes between Sara and Grissom. We learn the name of their dog is Hank, not Bruno (his actual name). A reference to Sara's ex, perhaps, 或者 just coincidence?