Depends on the jurisdiction (and the crime). In the UK, for the most serious (indictable-only) crimes, then no. But you can ask the judge to end the trial afte

Depends on the jurisdiction (and the crime). In the UK, for the most serious (indictable-only) crimes, then no. But you can ask the judge to end the trial after the prosecution case if no reasonable jury could convict, including if as a matter of law no crime has been committed.