george: most of h.h. holmes' notoriety centers in chicago, around the site of what's now this us post office. it was there, in 1889, that he built his famous murder castle hotel ahead of the city's world fair, a castle full of secret chutes and gas chambers. some who arrived were never seen again. matt: he'd wind up putting them into an airtight room and turning a gas on in there until they suffocated. george: experts believe holmes made big money selling his victim's body parts and swindling their insurance. and in 1894, holmes brought his swindling to philadelphia and this corner of 13th and callowhill. it was here, lake says, that greed finally got the best of him. in his scheme to get insurance money, he killed his business partner, making it look like an accident. but a philadelphia investigator uncovered his scam and holmes was arrested, leading to the discovery of his heinous crime. newspapers covered his trial daily right here in city hall, and the philadelphia inquirer's publisher paid him for his confe

. >> i leave you prayers with all my heart h.h. holmes7, 1996. >> the day of his execution. >> reporter: they believe the hand written letter revealed something unexpected. >> that letter turns around and says at the 11th hour, he was remorseful. >> this is a true artifact. >> reporter: he's confident that the inscription was written by holmes, but he doubts the serial killer was truly reformed. >> at that point on the day of your execution, isn't it a little too late to ask for your soul to be reprieved from eternal damnation when you've basically killed men, women and children? >> reporter: a sense that father daily sich watted them on the right side of history. >> i'd say i'm glad i'm related on this side rather than the other side. >> reporter: for the investigators george spencer nbc 10 news. >> nbc 10 has complete coverage on the life and mystery of h.h. holmes. >>> meteorologist erika martin. we're going to be seeing a lot of rain. >> we do have rain on the way, so it looks like a soggy start to workweek. so let's take a look at yo

sunday at 11:00 on nbc 10 news, see if the family heirloom sheds new light on h.h. holmes' murder spree. first alert weather. >> good morning. i'm meteorologist erika martin with your pocono forecast right now. current temperature, 50 degrees, humidity, 77%, and northeasterly at 10 miles per hour. i mention humidity, because it's been very humid for the past couple of days, especially yesterday, but dew points are lower for today, so a lot more comfortable all around. reading at 61. lancaster at 61. millville and wellington currently at 68. and trenton, 62 degrees. but notice here the winds are coming out of the northeast. so, yes, that does mean we have cooler air sliding into our area. and look at how strong these wind speeds are right now. 18 miles per hour for atlantic city. 24 for wildwood. 14 for philadelphia and tom's river and 14-mile-per-hour wind speeds in wilmington. they're going to get stronger as the day progresses, because we do have a cold front sweeping on down from the northwest towards the southeast. weekend high temperatures, not very impressive. in fac

sunday at 11:00 on nbc 10 news, see if the family heirloom sheds new light on the murder spree of h.h. holmes. . >>> pippa middleton, the sister of britain ee's duchess of cambridge is now married. there she is sharing a kiss with her new husband. pippa's sister, kate, escorted the bridesmaids including prince george and princess charlotte. princes harry and william also attended the wedding. >> announcer: now your nbc 10 first alert weather. >> good morning, guys. i'm meteorologist erika martin and i'm tracking a chilly forecast. coatstown, 55 for you. yesterday, we saw temperatures topping out in the upper 80s and low 90s. not the case for today. we're only going to top out in the 60s, at best. wilmington, currently temperature, 65. vineland, 63. and mt. holly currently at 56 degrees. look at the wind direction, east-northeasterlies right now. we have chillier air sliding into our viewing areas. that's going to be a cold day today and a cold day tomorrow. and i think while we're seeing upper 60s for this entire viewing area. keep that in mind. be sure to keep those jackets handy. satellite

the infamous murderer who was known as h.h. holmes.ew answers about his death. and as investigative reporter george spencer found out, delaware county has become ground zero in solving this mystery. george spencer: he's been called america's first serial killer.

philadelphia family's bible, sunday at 11:00 on nbc 10 news, see if the family heirloom sheds new light on h.h. holmes' murder spree. >>> 6:23 right now. this morning, here's a live look in south philly at the wind turbines going around there at lincoln financial field. a little bit of a breezy start to our day. and it is going to be cooler today than we've seen over the past few days with that heat wave. meteorologist erika martin will be back in just minutes with the details for us. >>> all right, this morning in england, guests a arriving for the wedding to have pippa middleton. she'll marry hedge fund millionaire jeff matthews. prince kate and william will be there. their children will be part of the wedding party. >>> back here, if you're in good spirits today, you'll want to head to south philly for the first annual all-star craft beer and wine festival. this is a live look at citizens bank park where the festival runs from 3:00 to 7:00 this afternoon. there will be food, live entertainment, plus giveaways. proceeds benefit local charities. >>> a fund-raiser in center city last night featured al