Nothing really looks wrong here
At first look this room appears to not have much wrong with it other than a little water damage.
The damaged area...before we knew there was an issue
A view of the wall with the most extensive damage....you would never know from this photo what was lurking behind the baseboard heating.
The damage has been uncovered!
Baseboard heating was disengaged from the wall and revealed black mold
Some containment setup
Containment is setup to prevent cross contamination of other areas of the home.
The unfortunate aftermath of black mold
Unfortunately ignoring water damage leads to much worse scenarios. At least now the homeowner has piece of mind that the black mold in their home is gone!