gregson, your mother just got here. okay. now, look, my wife's the victim here, i'm the target, his case, so let me be clear: i'm not running point when i tell you i want a rush on the prints and the serology. if this guy's got a vendetta against a cop, there's a good chance he's in the system. captain. it hardly needs saying, but watson and i will devote our full attention to this matter. we might need access to your files, personal and professional. there's a good chance we'll need so... comfortable with that? whatever you need. just help marcus find this guy. watson: did you know that captain gregson turned down a promotion that would have made him the youngest detective in the nypd? he didn't want to work for internal affairs. he is also, judging by his e-mails, surprisingly tolerant of forwarded videos of mischievous kittens. he never talks about any of these things. i guess i shouldn't be surprised. i mean, none of us even knew he was separated until tonight. i knew. had my suspicions, anyway. he's been arriving earlier

ask that captain thomas gregson be informed of the call. i'll be there shortly. yes. okay. hurry along, watson. dead body awaits.

tom gregson. can i help you? i am the knight. i was dubbed. now i am the knight. okay. that's why i had to kill the queen. you killed the queen? it was my duty. i had to kill her. i had to. gun! sir! it was my duty. hey! if you pick up that gun, this is gonna end fast and ugly. i'm the knight. holmes, stay back, stay back! i was dubbed. sir, i'm gonna ask you one more time-- step away from that weapon. can i try something?