i'm scott schafer.ks for joining us. >>> we'll be off next week for thanksgiving and we want to wish all of you a happy holiday. from all of us here, good night. last week peter offord, a 43-year-old plumber, was arrested on suspicion of a warehouse robbery in wembley, but his d.n.a. didn't match any found at the scene. however, it did show a link to a man found strangled on a tube train, here, in march, '96. the dead man's identity has never been established. until now? it turns out peter offord was that murder victim's son. yeah? how did he react to that? never knew his dad, apparently. he was brought up alone by his mum. but i don't understand. if this fella died on the tube, then surely this is one for british transport police. yeah, well, since 2002, the commissioner and the transport police chief constable confer on such cases, and it's been mutually agreed that u.c.o.s. should take this one on. what she means is, it's been dumped on us. any scene-of-crime photos?

i'm scott schafer.ks for joining us. >>> we'll be off next week for thanksgiving and we want to wish all of you a happy holiday. from all of us here, good night. >>> the following kqed production was produced in high definition. ♪ >>> calories, calories, calories! >> wow, it rocked my world! >> it just kind of reminded me of boot camp. >> i don't know what you had, but this is great! >> it almost felt like sort of country club food to me. >> don't touch it. it's hot! >> i gotta tell you, you people are getting me all excited with all these dishe

i'm scott schafer.ks for joining us. >>> we'll be off next week for thanksgiving and we want to wish all of you a happy holiday. from all of us here, good night. ♪ ♪ ♪ >>> on this edition for sunday, november 24th, what the agreement on iran's nuclear program means. margaret warner reports from geneva, switzerland. and in our signature section from that way pep a get-tough program that's keeping probationers out of prison. >> the way i was raised and the way my wife and i was trying to raise our son. you tell them what the rules are and if there's misbehavior, you do something immediately. >> next on pbs "news hour weekend." pbs "news hour weekend" is made possible by judy and josh westin, joyce b. heal, the wall be onning family in