Blue Murder: Up in Smoke

After a young wife hangs herself, an altercation ensues between two employees in the mortuary cremating her body. One is her presumptive lover and the other her grieving husband. Someone evidently has been murdered because computer records at the crematorium show the weight of two bodies in the ashes., but as both men are missing, DCI Lewis is at a loss as to which is the murderer and which is the victim.