5 things you need to know Monday
America searches for answers in the wake of the Orlando massacre
Authorities will continue their investigation Monday into what motivated Omar Mateen to walk into a gay Orlando nightclub and open fire in a massacre that left at least 50 people dead and put 53 more in the hospital. Dozens of victims have yet to be identified as Americans struggle to come to terms with the deadliest mass shooting in their country's history. Mateen said he had sworn allegiance to the Islamic State before he died in a shootout with police, but investigators have yet to determine whether the terror group had any direct role in plotting the attack.
Warriors attempt to cap historic run with repeat championship
The Bay Area may soon host another parade as the Golden State Warriors are one game away from winning back-to-back NBA Finals, facing the Cleveland Cavaliers in Game 5 on Monday night (9 p.m. ET, ABC). The Warriors, seeking to validate their NBA-record 73-win season, should be able to count on MVP Stephen Curry (he silenced critics with his Game 4 performance), but they'll be without their emotional leader Draymond Green, who was suspended after the league issued him a flagrant foul against Cavs superstar LeBron James.
Apple to reveal what your iPhone will do this fall
The tech giant kicks off its Worldwide Developers Conference with a keynote on Monday in San Francisco. The event offers our first taste of what new features iPhones will boast this fall. Along with a peek at iOS 10, attendees will likely see a whole lot of Siri, Apple's digital voice assistant. The big rumor points to Siri working with third-party apps. "Hey Siri, call Uber?" Yes, please.

Eight-member Supreme Court faces three hot-button issues
Rulings on social issues loom in the final weeks of this Supreme Court term, and decisions in any of three big pending cases could come as soon as Monday. The eight-member court has experienced difficulties following Justice Antonin Scalia’s death — prompting several tie votes, compromised rulings on divisive issues and more caution in granting cases for next term. Issues of huge social importance — abortion, affirmative action and immigration — are among the 19 cases left to be decided before the end of June.
Vigil set for slain 'The Voice' singer Christina Grimmie
A candlelight vigil Monday will honor slain pop singer Christina Grimmie in her New Jersey hometown. Grimmie, 22,was fatally shot Friday night while signing autographs after a concert in Orlando. Randy Brown, mayor of Evesham, N.J., said that the vigil will take place at 8:45 p.m. ET. Grimmie gained fame on NBC's The Voice two years ago after becoming a star on YouTube. She attended high school in Marlton, N.J., before moving to California in 2012.

And the essentials:
Weather: Severe storms are expected across the Plains and Texas will once again see showers.
Stocks: U.S. stock futures were lower Monday.
TV Tonight: Wondering what to watch tonight? TV critic Robert Bianco looks at UnReal, Major Crimes and Spartan: Ultimate Team Challenge.
Be inspired: Boy sends monster hugs to people who need it most.
Bonus: If you missed last night's Tony Awards, here are all those red carpet looks.
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