Brandon Flowers said he had his fingers crossed, hoping for the best. Before arriving in Boston Monday night, the Killers had canceled the previous three gigs after their charismatic frontman had battled laryngitis.

At the Agganis Arena, before a sold-out crowd, Flowers worried early on that he wouldn’t be able to deliver. But he did in a performance that occasionally felt tentative but still roared with the intensity of the band’s best moments on record.