Lets say a wizard Arcane Locks a door in a house. Then the wizard goes off to the nearby park for a walk. While she's away, a master thief enters the house and breaks the Arcane Lock and steals all the goodies in the previously locked room.
The description of Arcane Lock in the PHB pg.215 describes the spell in detail and that it can be broken or suppressed, but it doesn't clearly say if the wizard who cast the spell knows it has been broken/suppressed.
What I'm wondering is: Does the wizard know when the Arcane Lock is broken, does she somehow sense the spell being broken or suppressed?
Best Answer
No, they don't.
The general rule of thumb is that spells (and all rules) do exactly what they say they do.
Jeremy Crawford - Voice of Official Rulings for WotC
Arcane Lock says...
PHB215
Arcane Lock does not specify that the caster is aware if the spell is broken. Therefore, they are not. If they were notified, it would say so.
If you want to be notified of an intrusion, that's what the Alarm spell is for.
For further reading on the 'Spells do what they say', then see here