Shadow War: Alpha #1

"When Deathstroke assassinates Ra's al Ghul, Talia al Ghul demands revenge and sends her League of Shadows to kill Deathstroke and Deathstroke Inc.! Batman and Robin must team up to track down Deathstroke and bring him to justice...but do they? Expect over-the-top fights, action, mystery, and betrayal as this crossover event creates a major impact on the DCU!
The action continues in April with Batman #122!"