Nescio utrum tres coniurati maneat an in exsilium contenderint.
The official translation (by Harper Collins) of this sentence is:
"I do not know whether the three conspirators are remaining or have hastened into exile."
In which case, shouldn't "maneat" be in the third person plural (maneant) rather than singular?
Cum illum hominem esse servum novisset, eum comprehendere non dubitavit. ...