Its an incredibly sad season for the cast and crew ofEverwood.

Both men were exceptional actors, wonderful husbands, fathers and friends.

They will be missed tremendously.

Everwood’s Gregory Smith reacts to Treat Williams' death

Treat Williams, Gregory Smith in Season 3 of EverwoodCourtesy of Everett Collection

Berlantiposted a tribute on Instagramnext to a photo of Williams with Berlantis sister.

I can still feel the warmth of your presence, Berlanti wrote.

I remember our first lunch like it was yesterday.

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Myself and my fellow producer were meeting you about playing Doctor Andy Brown.

I was shaking (it was only months after September 11th and the whole world was still shaking).

The assignment by the studio was to somehow vibe and see if you were Andy.

I can still feel the warmth of your presence back then.

People could feel it through the screen when watching Everwood.

Watch on Deadline

I have many photos from that joyful time.

This is the one I keep by my writing desk.

Its from our lunch after the Everwood pick up at upfronts, of you and my sister.

Ive always loved it because it reminds me of the best about this business.

As it, and you, always will.

This news is devastating, Smith said in a statement to Deadline.

Treat was a wonderful man and a brilliant actor.

Above all, he loved his family so much.

Im very grateful for the time I got to spend as part of his extended tv family.

He made an indelible impression on me during my most formative years.

Im sending love to his family, Pam, Gil and Elinor.

He will be deeply missed.

Sarah Drew, who co-starred as Hannah Rogers on Seasons 3 and 4 ofEverwoodalso issued a statement to Deadline.

Im utterly heartbroken by the tragic and sudden death of Treat Williams.

My experience working with Treat on Everwood was formative in my life and career.

We had a beautiful and extremely close-knit family during our years in Salt Lake City.

I learned so much from Treats talent and leadership and we have lost a bright light today.

My heart goes out to his family.

VanCamp, who starred opposite Williamsissued a statement Monday.

Sending all my love to your family, Treat.

Fly high my friend.

Scott Wolf, who protrayed Dr. Jake Hartman on Everwood, remembers Williams big, beautiful heart.