TV Guide has all the goods about how much time Alex will miss due to his rehab stint and how the story will evolve around that. They also have some finale spoilers!
Okay first how much of the show will be McGarrett-less?
Just one full episode will be McGarrett-less. When Alex went to rehab in March, citing dependency on prescription pain medication due to a shoulder injury, the Hawaii Five-0 team did have to do some last-minute scrambling. But according to executive producer Peter Lenkov, Alex’s absence fit in well with the story arc he’d already mapped out.
How will they explain his absence? Hey what do ya know Joe?
McGarrett suspects Joe (Terry O’Quinn) lied to him about being Shelburne. “He ends up leaving a ‘Dear Danno’ letter before taking off to find the real Shelburne,” explains Peter.
Sadly Alex will miss the big NCIS crossover episode on April 30. That is a total bummer! But for the finale:
Alex also appears in the action-packed May 14 season finale, which begins with the death of a familiar face and also sees the returns of Terry O’Quinn, Tom Sizemore and William Baldwin. And for the record, Peter assures me Alex is “doing great.” Good to hear.