In the shot from behind the car after Steve apologises to Danny, both Steve and Danny are shown getting in the car at the same time, however when the shot is through Steve's window, the passenger door is shut and Danny is nowhere to be seen.
While making her report to LCMDR McGarrett regarding her autopsy of the male Russian spy Lee Sterling found dead at the bottom of the pool, Medical Examiner Doctor Noelani Cunha, states, "before he died, Mr. Stirling went into cardiac arrest." The definition of clinical death is the cessation of heart function and respiration, the same definition as cardiac arrest. A medical doctor in the position of Medical Examiner would never mistake or misuse these terms.
At 23m38s, when Lou enters the house he can see a crew member running by.