Tom's house burned down in mysterious circumstances.

Time and circumstances bring wisdom.

I will rescue you from these horrible circumstances.

Given the circumstances, it was inevitable that such an incident should take place.

Due to unforeseen circumstances, tonight's meeting has been cancelled until further notice.

Technically, you're right. However, you must also consider the unusual circumstances that pertain here.

The circumstances of his death have not yet been clarified.

It was never my intention to hurt him, but circumstances forced me to.

The artist Jean-Louis Aubert is apparently right to say: "If you have joy in yourself, you could more easily catch happiness." Thus, in all circumstances, the blessed will never be completely cut down; he will always keep some verve. This could be called resilience.

Tom is doing a good job under very difficult circumstances.