Discourse resumption (toujours est-il que)

When hunting for local monsters, you will naturally face some doubts. People might find your stories implausible (invraisemblable), or the phenomena you witness might be entirely unexplained (inexpliqué).

People are skeptical because this story is implausible.
Les gens sont sceptiques parce que cette histoire est invraisemblable.

Pivoting Back to the Facts

When you want to acknowledge a doubt, a digression, or an alternative explanation, but then firmly pivot back to your main point, use the expression toujours est-il que (the fact remains that / be that as it may).

That seems implausible; the fact remains that the beast is there.
Cela semble invraisemblable ; toujours est-il que la bête est là.
The phenomenon had disappeared; the fact remains that it is unexplained.
Le phénomène avait disparu ; toujours est-il qu'il est inexpliqué.

The Indicative Mood

Although many French expressions ending in que require the subjunctive, toujours est-il que does not. Because it asserts a concrete reality, it always takes the indicative mood (standard tenses like the present or imperfect).

The hunter was skeptical; the fact remains that he was afraid.
Le chasseur était sceptique ; toujours est-il qu'il avait peur.

This structure is perfect for standing your ground. Even if skeptics offer a rational explanation for a loud roar (un rugissement) or point out that the beast is gone, you can brush it off and return to the hard facts of your cryptid encounter!

It was perhaps the wind; the fact remains that the roar was terrifying.
C'était peut-être le vent ; toujours est-il que le rugissement était terrifiant.
The animal had fled; the fact remains that we discovered its lair.
L'animal avait fui ; toujours est-il que nous avons découvert son repaire.