A to Z: K is for Killing and Keeper

For this year's A to Z Blogging Challenge I'm featuring books that I'd like to read!
 
K is for: Killing Lincoln: The Shocking Assassination that Changed America Forever by Bill O'Reilly and Martin Dugard

The anchor of The O'Reilly Factor recounts one of the most dramatic stories in American history—how one gunshot changed the country forever. In the spring of 1865, the bloody saga of America's Civil War finally comes to an end after a series of increasingly harrowing battles. President Abraham Lincoln's generous terms for Robert E. Lee's surrender are devised to fulfill Lincoln's dream of healing a divided nation, with the former Confederates allowed to reintegrate into American society. But one man and his band of murderous accomplices, perhaps reaching into the highest ranks of the U.S. government, are not appeased.
In the midst of the patriotic celebrations in Washington D.C., John Wilkes Booth—charismatic ladies' man and impenitent racist—murders Abraham Lincoln at Ford's Theatre. A furious manhunt ensues and Booth immediately becomes the country's most wanted fugitive. Lafayette C. Baker, a smart but shifty New York detective and former Union spy, unravels the string of clues leading to Booth, while federal forces track his accomplices. The thrilling chase ends in a fiery shootout and a series of court-ordered executions—including that of the first woman ever executed by the U.S. government, Mary Surratt. Featuring some of history's most remarkable figures, vivid detail, and page-turning action, Killing Lincoln is history that reads like a thriller.

And...

K is for: The Secret Keeper by Kate Morton

During a party at the family farm in the English countryside, sixteen-year-old Laurel Nicolson has escaped to her childhood tree house and is dreaming of the future. She spies a stranger coming up the road and sees her mother speak to him. Before the afternoon is over, Laurel will witness a shocking crime that challenges everything she knows about her family and especially her mother, Dorothy.

Now, fifty years later, Laurel is a successful and well-regarded actress, living in London. She returns to the family farm for Dorothy’s ninetieth birthday and finds herself overwhelmed by questions she has not thought about for decades. From pre-WWII England through the Blitz, to the fifties and beyond, discover the secret history of three strangers from vastly different worlds—Dorothy, Vivien, and Jimmy—who meet by chance in wartime London and whose lives are forever entwined.

Which do you prefer, reading history fact or fiction?