Sue is correct in what she says, but it's a little more complicated than than. It would depend on the jurisdiction (which state this took place in), whether or not the DA could produce physical proof of the other assaults (DNA, other witnesses, articles of victims' clothing in the possession of the suspect, etc.), if there was some kind of photographic evidence, any previous convictions against the suspect (which might or might not be admissible), and any number of other factors. Plus, if we have incidents occuring across state lines, the Feds could get involved, and those laws don't work the same as state laws. Federal prosecutors often have more leeway in presenting evidence than state prosecutors do.
In other words, this could go either way. But I do echo Sue's comment that suspects do seem to have more rights than victims at times. It's one of the prices we pay for living in a society where the rights of the individual are as important (or sometimes more important) than the general health and safety of society as a whole. Of course, that's an entirely different discussion!
