and you throw the key into the seine river. and that locks in the moment forever. >> reporter: but for richelle and joseph, forever would only be a matter of weeks. on a sweltering wednesday in july, richelle learns that the love of her life has been murdered. >> there are police cars everywhere. there's crime scene tape all around joseph's house. there. there were reporters there. it was just absolute chaos. >> reporter: cutting through the chaos and confusion, detective zach johnson zeroed in on sonnier's girlfriend, richelle shetina. >> you always have to consider people the closest. because 90% of the time, it's going to be the people that are closest to our victims that commit the crime against them. >> reporter: the police take richelle in for questioning. she's on the hot seat and she starts naming names. >> there j joseph would get these horrible text messages, you know? calling him a [ bleep ] and you know, "you're such a [ bleep ] and whatever." >> reporter: when there's nothing like trying something new. especially w

been provided by: steves: the latin quarter is the core of the left bank, as the south side of the seine rivers has long been the city's university district. in fact, the university of paris, a leading university in medieval europe, was founded here in the 13th century. back then, the vernacular languages, like french and german, were crude, good enough to handle your basic needs. but for higher learning, academics like this guy spoke and corresponded in latin. until the 1800s, from sicily to sweden, latin was the language of europe's educated elite, and parisians called this university district "the latin quarter" because that's the language they heard on the streets. today, any remnant of that latin is buried by a touristy tabbouleh of ethnic restaurants. still, it remains a great place to get a feel for the tangled city, before the narrow lanes were replaced by wide, modern boulevards in the 19th century. the scholarly and artsy people of this quarter brewed up a new rage, paris's café scene. by the time of the revolution, the city's countless cafés were the haunt of politicians and philoso