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1. Mysteries, solved and unsolved. In February 2004, a UMass student disappeared. She hasn’t been heard from since. Can the Internet find some answers? A video blogger was preparing to jump into the Thames River. He was stopped from ending his own life by a complete stranger. Six years later, a Twitter campaign to reunite the two resulted in a reunion. Watch a video of the reunion. On Wednesday night, actor and Newton native BJ Novak made an appearance on Late Night with David Letterman. During the appearance, Novak took responsibility for a 1997 prank at the Museum of Fine Arts, covered at the time by none other than The Boston Globe. After 16 months adrift at sea, a man washed up (alive). He reportedly survived by drinking turtle blood.

2. You’re old. It has been 20 years since Green Day’s Dookie was released. Another birthday of note: Dungeons & Dragons is 40. Why the game loved by nerds the world over matters. The season finale of Seinfeld aired more than 15 years ago. But word is, there’s a reunion in the works.

3. The Knox saga continues. Amanda Knox, the American convicted in 2009 of conspiring to murder her then-roommate, was yet again found guilty yesterday by an Italian court. Knox’s boyfriend at the time of the alleged murder, Raffaele Sollecito, was caught last night near the Italy-Austria border. But could Knox be extradited back to Italy? She told the Guardian: “They’ll have to pull me back kicking and screaming to prison.”

4. Death Penalty Decision: The day after. Yesterday, the announcement came that prosecutors will seek the death penalty against accused Boston Marathon bomber Dzhokhar Tsarnaev. Not surprisingly, given Massachusetts is a state where voters largely oppose the death penalty, the reaction was divided. Boston Mayor Marty Walsh opposes the death penalty in Massachusetts, but supports yesterday’s decision. So does—surprise, surprise—Howie Carr! But there were voices of opposition. More (from the archives) on the “tiny, funny and fiercely intelligent” woman heading up the Tsarnaev defense team.

5. Also ... Introducing “Blackphone,” a new smartphone designed just for the growing number of people understandably paranoid that someone (other than the person you’re trying to communicate with) is listening in. When we’re not worrying about our privacy, America is obsessed with the impending Apocalypse, and it has always been that way. Marijuana is known to cause paranoia, so you can expect Blackphone sales and Apocalypse theories to increase as marijuana legalization moves forward, one state at a time. Everything you never really understood about e-cigarettes explained, via slow jam. Climate change is now threatening baby penguins. Figure skating has “the potential to be a gay haven in the world of sports.” Why is what some call the “Gayest Sport Ever” so afraid? These 10 TV shows changed the world. Crack-smoking Toronto Mayor Rob Ford likes being tickled. And in keeping with its long tradition of sending news alerts on things undeserving of news alerts, CNN informs us that when he’s bored, Dennis Rodman likes to drink.

Five@Five is a new feature that you can expect on this blog every weekday at 5 p.m.

See something that should be included? E-mail me at Follow me on Twitter @lilsarg.