John Wilkes Booth succeeded in 1865, but the first major plot to assassinate Abraham Lincoln unfolded in 1861 in anticipation of the then president-elect’s railway trip to Washington, D.C., for his inauguration. Stashower (The Beautiful Cigar Girl) explains how Allan Pinkerton, a temperamental Scottish cooper turned “fierce and incorruptible lawman” and founder of the Pinkerton Agency, sought to infiltrate and obfuscate a murderous group led by Cypriano Ferrandini, an outspoken Italian barber in Baltimore. Interwoven with the tale of Pinkerton and company’s efforts to foil what would become known as the Baltimore Plot, Stashower offers a rich portrait of a resolute but weary Lincoln as he makes his way, both politically and physically, to the White House. As everyone knows, he arrived without incident, but while he saved his skin, he lost some respect for stealing into the capital “like a thief in the night,” as one newspaper put it. The book starts out slow, but once Stashower lets the Pinkerton operatives loose, their race against time as Lincoln’s train speeds toward Maryland makes for an enthralling page-turner that is sure to please true crime, thriller, and history fans. Photos. (Feb.).