Evidence was illegally taken from my home without a search warrant. Isn't this illegal? Will the case against me be dismissed?

Possibly. If a judge decides the evidence was gathered improperly, it may not be allowed into evidence. However, there are many legal loopholes that may allow the evidence to be admitted anyway, and the prosecutor may still be able to effectively try the case even without the evidence.

A criminal defense attorney from your area is the best person to advise you in such matters.