_**Serviceable but routine installment in the amusing crocogator franchise**_ The nephew (Colin Ferguson) of deceased Sadie Bickerman takes over her rustic estate on Black Lake, but his son starts feeding the little crocs and soon there’s a huge problem with monstrous killer crocs. Kirsty Mitchell is on hand as his wife while Yancy Butler plays an amusingly droll hunter. “Lake Placid 3” (2010) is a solid, if unremarkable, entry in the series, marred by the cartoony croc CGI. I was never a big fan of the semi-campy series since they’re throwaway horror flicks with the first movie (from 19...