What is the main conflict in Smokescreen by Dick Francis?

Smokescreen is a novel by mystery writer and former steeplechase rider, Dick Francis. In this novel, Edward Lincoln, or Link, is an actor who has gone to South Africa to check on some horses for a friend. Link goes to Johannesburg under the guise of attending a premiere of one of his movies. While attending press conferences and fending off requests for more public appearances, Link finds himself drawn into a mystery that appears to include attempts on his own life. As Link gets closer to the truth, he finds himself in more danger than ever. Smokescreen is another exciting mystery, filled with horses, that will entertain Dick Francis fans and newcomers alike.