Baxter!

Baxter! is a 1973 British-American drama film directed by Lionel Jeffries and starring Patricia Neal, Jean-Pierre Cassel and Britt Ekland. The film follows a young boy called Roger Baxter who struggles to overcome his speech problem (rhotacism) and his strained relationship with his parents. The film was based on a book by Kin Platt, called "The Boy Who Could Make Himself Disappear".
The film was made before Jeffries' third film as director, "The Amazing Mr Blunden", but released afterwards.
Plot.
Roger Baxter (Scott Jacoby), a young boy with a speech impediment from the U.S.A. goes to live in London with his mother (Lynn Carlin), after his parents' divorce. He makes friends with his speech therapist (Patricia Neal) and Chris Bentley (Britt Ekland), his neighbour who he met in a lift. He also makes friends with Chris' French husband, Roger Tunnell (Jean-Pierre Cassel) and Nemo (Sally Thomsett), a girl across his flat. He struggles to get along with both of his parents and he feels isolated in a strange city. He struggles to say the letter R and eventually slides into an emotional breakdown. A few times he can say the letter R but then sometimes he can't.
Production.
"The Boy Who Could Make Himself Disappear" was published in 1968. One critic called it "unforgettable".
In November 1971 it was announced the film would be called "The Boy" and it would be a co production between EMI Films and Group W Films.
The film starred Scott Jacoby, who had just played the lead in a TV movie, "That Certain Summer". It was a rare English language film for Jean-Pierre Cassel.